declamation vs harangue

declamation and harangue both are nouns.

Word	Noun	Adjective	Verb	Adverb
declamation	Yes	No	No	No
harangue	Yes	No	Yes	No

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

Other hyponyms of declamation include broadside, philippic, tirade, rant, ranting, raving.

declamation (noun)	harangue (noun)
vehement oratory	a loud bombastic declamation expressed with strong emotion
recitation of a speech from memory with studied gestures and intonation as an exercise in elocution or rhetoric

declamation (verb)	harangue (verb)
	deliver a harangue to; address forcefully