smooth muscle vs smooth muscle cell

smooth muscle and smooth muscle cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
smooth muscle	Yes	No	No	No
smooth muscle cell	Yes	No	No	No

smooth muscle (noun)	smooth muscle cell (noun)
a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)	cells of the smooth muscles
muscle tissue that does not appear striated under the microscope; has the form of thin layers or sheets