aspiration vs ambitiousness

aspiration and ambitiousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
aspiration	Yes	No	No	No
ambitiousness	Yes	No	No	No

As nouns, ambitiousness is a hypernym of aspiration; that is, ambitiousness is a word with a broader meaning than aspiration:

Other hypernyms of aspiration include ambition.

aspiration (noun)	ambitiousness (noun)
the act of inhaling; the drawing in of air (or other gases) as in breathing	a strong drive for success
a will to succeed
a manner of articulation involving an audible release of breath
a cherished desire