heartiness vs dynamism

heartiness and dynamism both are nouns.

Word	Noun	Adjective	Verb	Adverb
heartiness	Yes	No	No	No
dynamism	Yes	No	No	No

As nouns, heartiness and dynamism are synonyms defined as:

Other synonyms of heartiness include vigor, vigour.

heartiness (noun)	dynamism (noun)
the quality of hearty sincerity	the activeness of an energetic personality
active strength of body or mind	active strength of body or mind
	any of the various theories or doctrines or philosophical systems that attempt to explain the phenomena of the universe in terms of some immanent force or energy