trenchancy vs effectiveness

trenchancy and effectiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
trenchancy	Yes	No	No	No
effectiveness	Yes	No	No	No

As nouns, effectiveness is a hypernym of trenchancy; that is, effectiveness is a word with a broader meaning than trenchancy:

trenchancy: keenness and forcefulness of thought or expression or intellect
effectiveness: power to be effective; the quality of being able to bring about an effect

Other hypernyms of trenchancy include effectivity, effectuality, effectualness.

trenchancy (noun)	effectiveness (noun)
keenness and forcefulness of thought or expression or intellect	power to be effective; the quality of being able to bring about an effect
	capacity to produce strong physiological or chemical effects