clack valve vs clack

clack valve and clack both are nouns.

Word	Noun	Adjective	Verb	Adverb
clack valve	Yes	No	No	No
clack	Yes	No	Yes	No

As nouns, clack valve and clack are synonyms defined as:

clack valve and clack: a simple valve with a hinge on one side; allows fluid to flow in only one direction

Other synonyms of clack valve include clapper valve.

clack valve (noun)	clack (noun)
a simple valve with a hinge on one side; allows fluid to flow in only one direction	a simple valve with a hinge on one side; allows fluid to flow in only one direction
	a sharp abrupt noise as if two objects hit together; may be repeated

clack valve (verb)	clack (verb)
	speak (about unimportant matters) rapidly and incessantly
	make a clucking sounds, characteristic of hens
	make a rattling sound