synonym vs equivalent word

synonym and equivalent word both are nouns.

Word	Noun	Adjective	Verb	Adverb
synonym	Yes	No	No	No
equivalent word	Yes	No	No	No

As nouns, synonym and equivalent word are synonyms defined as:

synonym and equivalent word: two words that can be interchanged in a context are said to be synonymous relative to that context

synonym (noun)	equivalent word (noun)
two words that can be interchanged in a context are said to be synonymous relative to that context	two words that can be interchanged in a context are said to be synonymous relative to that context