tea bag vs tea

tea bag and tea both are nouns.

Word	Noun	Adjective	Verb	Adverb
tea bag	Yes	No	No	No
tea	Yes	No	No	No

As nouns, tea is a hypernym of tea bag; that is, tea is a word with a broader meaning than tea bag:

Other hypernyms of tea bag include tea leaf.

tea bag (noun)	tea (noun)
small paper bag holding a measure of tea	a beverage made by steeping tea leaves in water
a measured amount of tea in a bag for an individual serving of tea	a light midafternoon meal of tea and sandwiches or cakes
	dried leaves of the tea shrub; used to make tea
	a tropical evergreen shrub or small tree extensively cultivated in e.g. China and Japan and India; source of tea leaves