sap vs bludgeon

sap and bludgeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
sap	Yes	No	Yes	No
bludgeon	Yes	No	Yes	No

As nouns, bludgeon is a hypernym of sap; that is, bludgeon is a word with a broader meaning than sap:

sap: a piece of metal covered by leather with a flexible handle; used for hitting people
bludgeon: a club used as a weapon

sap (noun)	bludgeon (noun)
a piece of metal covered by leather with a flexible handle; used for hitting people	a club used as a weapon
a person who lacks good judgment
a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant

sap (verb)	bludgeon (verb)
excavate the earth beneath	strike with a club or a bludgeon
deplete	overcome or coerce as if by using a heavy club