sap vs cuckoo

sap and cuckoo both are nouns.

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

As nouns, cuckoo is a hyponym of sap; that is, cuckoo is a word with a more specific, narrower meaning than sap:

sap (noun)	cuckoo (noun)
a piece of metal covered by leather with a flexible handle; used for hitting people	any of numerous European and North American birds having pointed wings and a long tail
a person who lacks good judgment	a man who is a stupid incompetent fool
a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant

sap (verb)	cuckoo (verb)
excavate the earth beneath	repeat monotonously, like a cuckoo repeats his call
deplete