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"But" is a conjunction which is often translated as "pero", and "not only" is a phrase which is often translated as "no solo". Learn more about the difference between "but" and "not only" below.
but(
buht
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
2. (emphatic)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
3. (only)
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
5. (objection)
not only(
nat
on
-
li
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (apart from)
a. no solo
Not only did she fail the exam, but she was absent the whole semester.No solo reprobó el examen, sino que estuvo ausente todo el semestre.
b. no solamente
This machine not only will reduce your costs, but it will improve the quality of your product.Esta máquina no solamente reducirá sus costos, sino que mejorará la calidad de su producto.