basin vs emesis basin

basin and emesis basin both are nouns.

Word	Noun	Adjective	Verb	Adverb
basin	Yes	No	No	No
emesis basin	Yes	No	No	No

As nouns, emesis basin is a hyponym of basin; that is, emesis basin is a word with a more specific, narrower meaning than basin:

basin (noun)	emesis basin (noun)
a bowl-shaped vessel; usually used for holding food or liquids	a basin used by bedridden patients for vomiting
a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
a natural depression in the surface of the land often with a lake at the bottom of it
the quantity that a basin will hold