sink vs founder

sink and founder both are nouns.

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

As verbs, founder is a hyponym of sink; that is, founder is a word with a more specific, narrower meaning than sink:

Other hyponyms of sink include settle, subside, submerge, submerse.

As verbs, founder is a hypernym of sink; that is, founder is a word with a broader meaning than sink:

Other hypernyms of sink include break, cave in, collapse, fall in, give, give way.

sink (noun)	founder (noun)
plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe	a person who founds or establishes some institution
a covered cistern; waste water and sewage flow into it	a worker who makes metal castings
a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof	inflammation of the laminated tissue that attaches the hoof to the foot of a horse
(technology) a process that acts to absorb or remove energy or a substance from a system

sink (verb)	founder (verb)
fall heavily or suddenly; decline markedly	break down, literally or metaphorically
embed deeply	sink below the surface
go under	stumble and nearly fall
fall or descend to a lower place or level	fail utterly; collapse
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