can vs water closet

can and water closet both are nouns.

Word	Noun	Adjective	Verb	Adverb
can	Yes	No	Yes	No
water closet	Yes	No	No	No

As nouns, water closet is a hyponym of can; that is, water closet is a word with a more specific, narrower meaning than can:

can (noun)	water closet (noun)
airtight sealed metal container for food or drink or paint etc.	a toilet in Britain
a room or building equipped with one or more toilets
a plumbing fixture for defecation and urination
the fleshy part of the human body that you sit on
a buoy with a round bottom and conical top
the quantity contained in a can

can (verb)	water closet (verb)
preserve in a can or tin
terminate the employment of; discharge from an office or position