ambition vs aspiration

ambition and aspiration both are nouns.

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

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

Other hyponyms of ambition include power hunger, status seeking.

As nouns, ambition and aspiration are synonyms defined as:

Other synonyms of ambition include dream.

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

ambition (verb)	aspiration (verb)
have as one's ambition