bicycle seat vs cycle

bicycle seat and cycle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bicycle seat	Yes	No	No	No
cycle	Yes	No	Yes	No

bicycle seat (noun)	cycle (noun)
a seat for the rider of a bicycle	a wheeled vehicle that has two wheels and is moved by foot pedals
	a single complete execution of a periodically repeated phenomenon
	a periodically repeated sequence of events
	a series of poems or songs on the same theme
	an interval during which a recurring sequence of events occurs
	the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)

bicycle seat (verb)	cycle (verb)
	recur in repeating sequences
	ride a motorcycle
	ride a bicycle
	pass through a cycle
	cause to go through a recurring sequence