training college vs college

training college and college both are nouns.

Word	Noun	Adjective	Verb	Adverb
training college	Yes	No	No	No
college	Yes	No	No	No

As nouns, college is a hypernym of training college; that is, college is a word with a broader meaning than training college:

training college: a school providing training for a special field or profession
college: an institution of higher education created to educate and grant degrees; often a part of a university

training college (noun)	college (noun)
a school providing training for a special field or profession	a complex of buildings in which an institution of higher education is housed
	the body of faculty and students of a college
	an institution of higher education created to educate and grant degrees; often a part of a university