Ambition is an improper (common) noun, since it is the name of something general. It is not a proper noun since it is not a title of something.
For example; "city" is an improper noun since it is general, but "London" is a proper noun since it is the title of a specific city.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
Oppose is a verb.
"Qualified" is an adjective. And so is the word "ambitious". Both words modify the noun "graduates", which is what an adjective does.
"As he was valiant I honour him but as he was ambitious I slew him."
"You all did see upon the Lupercal, I thrice presented him a kingly crown, which he did thrice refuse. Did this in Caesar seem ambitious?"
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.