syntactic category vs category

syntactic category and category both are nouns.

Word	Noun	Adjective	Verb	Adverb
syntactic category	Yes	No	No	No
category	Yes	No	No	No

As nouns, category is a hypernym of syntactic category; that is, category is a word with a broader meaning than syntactic category:

syntactic category: (grammar) a category of words having the same grammatical properties
category: a collection of things sharing a common attribute

Other hypernyms of syntactic category include class, family.

syntactic category (noun)	category (noun)
(grammar) a category of words having the same grammatical properties	a general concept that marks divisions or coordinations in a conceptual scheme
	a collection of things sharing a common attribute