vs
QUICK ANSWER
"Then" is an adverb which is often translated as "entonces", and "if" is a conjunction which is often translated as "si". Learn more about the difference between "then" and "if" below.
then(
thehn
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
a. entonces
If you eat healthy food, then you won't get sick.Si comes comida sana, entonces no te enfermarás.
if(
ihf
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
4. (assumption)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
If he enters the race—and that's a big if—he could receive many votes.Si entra a la carrera—y está por verse—podría recibir muchos votos.
The success of this project depends on a lot of ifs.El éxito de este proyecto depende de muchas suposiciones.
ifs
A plural noun indicates that there is more than one person, place, thing, or idea.
5. (conditions)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Do your homework now, or you can't go to the movies. No ifs or buts!Haz la tarea ahora, o no puedes ir al cine. ¡Nada de peros!
Don't worry about the ifs, just enjoy the moment.Olvídate de las dudas y disfruta el momento.