sink vs sinker

sink and sinker both are nouns.

Word	Noun	Adjective	Verb	Adverb
sink	Yes	No	Yes	No
sinker	Yes	No	No	No

sink (noun)	sinker (noun)
plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe	a pitch that curves downward rapidly as it approaches the plate
a covered cistern; waste water and sewage flow into it	a weight that sinks (as to hold nets or fishing lines under water)
a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof	a small ring-shaped friedcake
(technology) a process that acts to absorb or remove energy or a substance from a system

sink (verb)	sinker (verb)
fall heavily or suddenly; decline markedly
embed deeply
go under
fall or descend to a lower place or level
cause to sink
fall or sink heavily
appear to move downward
descend into or as if into some soft substance or place
pass into a specified state or condition; sink into