clutch vs transmission system

clutch and transmission system both are nouns.

Word	Noun	Adjective	Verb	Adverb
clutch	Yes	No	Yes	No
transmission system	Yes	No	No	No

clutch (noun)	transmission system (noun)
the act of grasping	the gears that transmit power from an automobile engine via the driveshaft to the live axle
a coupling that connects or disconnects driving and driven parts of a driving mechanism
a pedal or lever that engages or disengages a rotating shaft and a driving mechanism
a woman's strapless purse that is carried in the hand
a collection of things or persons to be handled together
a number of birds hatched at the same time
a tense critical situation

clutch (verb)	transmission system (verb)
affect
take into your hands deliberately
hold firmly, usually with one's hands