bitter end vs sailing

bitter end and sailing both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitter end	Yes	No	No	No
sailing	Yes	No	No	No

bitter end (noun)	sailing (noun)
(nautical) the inboard end of a line or cable especially the end that is wound around a bitt	riding in a sailboat
the final extremity (however unpleasant it may be)	the work of a sailor
	the departure of a vessel from a port
	the activity of flying a glider