pineapple vs ananas

pineapple and ananas both are nouns.

Word	Noun	Adjective	Verb	Adverb
pineapple	Yes	No	No	No
ananas	Yes	No	No	No

As nouns, pineapple and ananas are synonyms defined as:

pineapple and ananas: large sweet fleshy tropical fruit with a terminal tuft of stiff leaves; widely cultivated

pineapple (noun)	ananas (noun)
large sweet fleshy tropical fruit with a terminal tuft of stiff leaves; widely cultivated	large sweet fleshy tropical fruit with a terminal tuft of stiff leaves; widely cultivated
a tropical American plant bearing a large fleshy edible fruit with a terminal tuft of stiff leaves; widely cultivated in the tropics