| Subject | English | Spanish |
| work.fl., IT | alphanumeric entry word | entrada alfanumérica |
| work.fl., IT | entry word | materia principal |
| work.fl., IT | entry word | entrada alfabética |
| work.fl. | entry word | epígrafe |
| work.fl., IT | entry word | palabra de entrada |
| work.fl., IT | entry word | palabra principal |
| IT, tech. | entry word | palabra para el asiento |
| work.fl. | entry word | encabezamiento |
| work.fl., commun. | first-word entry | asiento por palabra inicial |
| work.fl., IT | leading entry word | entrada por medio de la palabra clave |
| work.fl., IT | mixed entry word | entrada alfanumérica mixta |
| work.fl., IT | numeric entry word | entrada numérica |
| work.fl., commun. | subject-word entry | asiento por materias |