baseball team vs nine

baseball team and nine both are nouns.

Word	Noun	Adjective	Verb	Adverb
baseball team	Yes	No	No	No
nine	Yes	Yes	No	No

As nouns, nine is a hyponym of baseball team; that is, nine is a word with a more specific, narrower meaning than baseball team:

Other hyponyms of baseball team include ball club, baseball club, club.

baseball team (noun)	nine (noun)
a team that plays baseball	one of four playing cards in a deck with nine pips on the face
	a team of professional baseball players who play and travel together
	the cardinal number that is the sum of eight and one

baseball team (adjective)	nine (adjective)
	denoting a quantity consisting of one more than eight and one less than ten