| Subject | English | Spanish |
| bot. | African walnut | nogal africano Lovoa klaineana |
| nat.sc., agric. | American black walnut | nogal negro americano (Juglans nigra) |
| bot. | American walnut | nogal negro Juglans nigra |
| bot. | American walnut | nogal de América Juglans nigra |
| bot. | Arizona walnut | nogal americano Juglans rupestris |
| bot. | Arizona walnut | nogal mexicano Juglans rupestris |
| nat.sc., agric. | bacterial blight of walnut | tizón bacteriano del nogal (Xanthomonas juglandis) |
| nat.sc., agric. | bacterial blight of walnut | peste negra del nogal (Xanthomonas juglandis) |
| nat.sc., agric. | bacterial blight of walnut | mal seco de los nogales (Xanthomonas juglandis) |
| bot. | Benin walnut | nogal africano Lovoa klaineana |
| bot. | black walnut | nogal negro Juglans nigra |
| nat.res., agric. | black walnut | nuez americana (Juglans nigra) |
| nat.res., agric. | black walnut | tocte (Juglans nigra) |
| bot. | black walnut | nogal de América Juglans nigra |
| bot. | Bolivian walnut | nogal blanco Juglans boliviana |
| bot. | California walnut | nogal de California Juglans californica |
| bot. | Chinese walnut | nogal de la China Juglans cathayensis |
| nat.sc., agric. | common walnut | nogal inglés (Juglans regia) |
| bot. | desert walnut | nogal americano Juglans rupestris |
| bot. | desert walnut | nogal mexicano Juglans rupestris |
| entomol. | dusky-veined walnut aphid | pulgón grande del nogal Calaphis juglandis |
| bot. | East Indian walnut | carbonero Albizzia lebbeck |
| bot. | East Indian walnut | pisquín Albizzia lebbeck |
| bot., Col. | East Indian walnut | guango Albizzia lebbeck |
| bot. | English walnut | nogal común Juglans regia |
| agric. | English walnut | nuez |
| bot. | English walnut | noguera Juglans regia |
| bot. | English walnut | nogal Juglans regia |
| agric. | English walnut tree | nogal inglés (Juglans regia) |
| agric. | English walnut tree | nogal (Juglans regia) |
| nat.sc., agric. | European walnut | nogal inglés (Juglans regia) |
| entomol. | European walnut aphid | pulgón grande del nogal Calaphis juglandis |
| nat.sc., agric. | european walnut aphid | pulgón pequeño del nogal (Callaphis juglandis, Callipterus juglandis, Chromaphis juglandicola) |
| bot. | Japanese walnut | nogal japonés Juglans sieboldiana |
| pest.contr. | leaf blotch of walnut | manchas de las hojas del nogal Gnomonia leptostyla |
| pest.contr. | leaf blotch of walnut | antracnosis del nogal Gnomonia leptostyla |
| bot. | Manchurian walnut | nogal de Manchuria Juglans mandschurica |
| bot. | Mexican walnut | nogal americano Juglans rupestris |
| bot. | Mexican walnut | nogal mexicano Juglans rupestris |
| bot. | Nigerian walnut | nogal africano Lovoa klaineana |
| bot. | Persian walnut | noguera Juglans regia |
| nat.sc., agric. | Persian walnut | nogal inglés (Juglans regia) |
| bot. | Persian walnut | nogal común Juglans regia |
| bot. | Persian walnut | nogal Juglans regia |
| bot. | Peruvian walnut | nogal del Perú Juglans neotropica |
| bot. | royal walnut tree | noguera Juglans regia |
| bot. | royal walnut tree | nogal común Juglans regia |
| bot. | royal walnut tree | nogal Juglans regia |
| food.ind. | shelled walnut | nuez pelada |
| bot. | Texas black walnut | nogal americano Juglans rupestris |
| bot. | Texas black walnut | nogal mexicano Juglans rupestris |
| bot. | Texas walnut | nogal americano Juglans rupestris |
| bot. | Texas walnut | nogal mexicano Juglans rupestris |
| nat.sc., agric. | walnut aphid | pulgón pequeño del nogal (Callaphis juglandis, Callipterus juglandis, Chromaphis juglandicola) |
| pest.contr. | walnut bacterial blight | mal seco del nogal Xanthomonas juglandis |
| pest.contr. | walnut bacterial disease | mal seco del nogal Xanthomonas juglandis |
| pest.contr. | walnut blight | mal seco del nogal Xanthomonas juglandis |
| pest.contr. | walnut blotch | antracnosis del nogal Gnomonia leptostyla |
| pest.contr. | walnut blotch | manchas de las hojas del nogal Gnomonia leptostyla |
| nat.sc., agric. | walnut blotch | antracnosis del nogal (Gnomonia leptostyla, Marssonina juglandis) |
| agric. | walnut butter | estearina |
| food.ind. | walnut butter | manteca de nueces |
| agric. | walnut drying plant | central de secado de nueces |
| entomol., Arg. | walnut erineum mite | erinosis del nogal Eriophyes tristriatus |
| bot. | walnut family | juglandáceas Juglandaceae |
| bot. | walnut grove | nogueral |
| bot. | walnut grove | noceda |
| environ., nat.res. | walnut, hickory and pecan family | juglandáceas (Juglandaceae) |
| agric. | walnut hull | ruezno de nuez |
| agric. | walnut hull | concho de nuez |
| entomol. | walnut husk fly | mosca de las nueces Rhagoletis completa |
| food.ind. | walnut kernel | nuez pelada |
| entomol., Arg. | walnut leaf gall mite | erinosis del nogal Eriophyes tristriatus |
| entomol. | walnut leaf miner | barrenador de las hojas del nogal Caloptilia roscipennella |
| chem. | walnut oil | aceite de nuez |
| agric. | walnut oil | aceite de nueces comunes |
| agric. | walnut plantation | nogales |
| agric. | walnut plantation grown primarily for wood | nogales destinados principalmente a la producción de madera |
| stat., agric. | walnut primarily grown for fruit | nogal destinado principalmente a la producción de frutos |
| milk. | walnut shell eyes cheese defect | agujeros cáscara de nogal |
| bot. | walnut tree | noguera Juglans regia |
| gen. | walnut tree | nogal |
| gen. | walnut-tree | nogal |
| agric. | walnut tree | nogal inglés (Juglans regia) |
| bot. | walnut tree | nocedal |
| agric. | walnut tree | nogal (Juglans regia) |
| bot. | walnut tree | nogal común Juglans regia |
| pest.contr. | walnut tree bacterial disease | mal seco del nogal Xanthomonas juglandis |
| bot. | walnut wood | nocedal |
| bot. | West African walnut | nogal africano Lovoa klaineana |
| bot. | white walnut | nogal ceniciento Juglans cinerea |