| Subject | English | Spanish |
| med. | Addison-Gull disease | enfermedad de Adisson-Gull |
| nat.res. | Audouin's gull | gaviota de Audouin (Larus audouinii) |
| nat.res. | black-headed gull | gaviota reidora común (Larus ridibundus) |
| nat.res. | black-headed gull | gaviota reidora (Larus ridibundus) |
| nat.res. | Bonaparte's gull | gaviota de Bonaparte (Larus philadelphia) |
| nat.res. | common gull | gaviota cana (Larus canus) |
| nat.res. | Franklin's gull | gaviota de Franklin (Larus pipixcan) |
| nat.res. | glaucous gull | gaviota hiperbórea (Larus hyperboreus) |
| nat.res. | great black-backed gull | gavión (Larus marinus) |
| nat.res. | great black-headed gull | gavión cabecinegro (Larus ichthyaetus) |
| nat.res. | gull-billed tern | pagaza piconegra (Gelochelidon nilotica, Sterna nilotica) |
| med. | Gull's disease | enfermedad de Gull |
| med. | Gull's disease | caquexia paquidérmica |
| med. | Gull's disease | mixedema |
| med. | Gull's renal epistaxis | hematuria renal esencial |
| med. | Gull's renal epistaxis | hemofilia renal |
| med. | Gull's renal epistaxis | epistaxis renal de Gull |
| transp., avia. | gull wing | ala en M |
| transp., avia. | gull wing | ala de gaviota |
| environ., nat.res. | gulls and terns | laridos (Laridae) |
| nat.res. | herring gull | gaviota argéntea (Larus argentatus) |
| nat.res. | icelandic gull | gaviota polar (Larus glaucoides) |
| tech. | inverted gull-wing | ala en W |
| nat.res. | ivory gull | gaviota marfil (Pagophila eburnea) |
| nat.res. | laughing gull | gaviota reidora amerciana (Larus atricilla) |
| nat.res. | laughing gull | gaviota reidora americana (Larus atricilla) |
| nat.res. | lesser black-backed gull | gaviota sombría (Larus fuscus) |
| nat.res. | lesser blackbacked gull | gaviota sombría (Larus fuscus) |
| nat.res. | lesser blank-wacked gull | gaviota sombría (Larus fuscus) |
| nat.res. | little gull | gaviota enana (Larus minutus) |
| nat.res. | Mediterranean gull | gaviota cabecinegra (Larus melanocephalus) |
| nat.res. | mediterranean gull | gaviota cabecinegra (Larus melanocephalus) |
| environ., nat.res. | relict gull | gaviota de Mongolia (Larus relictus) |
| nat.res. | ring-billed gull | gaviota de Delaware (Larus delawarensis) |
| nat.res. | Ross's gull | gaviota de Ross (Rhodostethia rosea) |
| nat.res. | sabine's gull | gaviota de Sabine (Larus sabini, Xema sabini) |
| med. | sea gull murmur | graznido de gaviota |
| nat.res. | slender-billed gull | gaviota picofina (Larus genei) |
| tech., industr., construct. | super-foot gull | pie superficial verdadero |
| med. | Sutton and Gull's disease | nefroangiosclerosis |
| nat.res. | Usa: short-billed gull | gaviota cana (Larus canus) |
| environ., nat.res. | waders, gulls and auks | charadridas (Charadriiformes) |
| nat.res. | white-eyed gull | gaviota ojiblanca (Larus leucophthalmus) |
| nat.res. | yellow-legged gull | gaviota patiamarilla (Larus argentatus cachinnans, Larus cachinnans) |