nobility vs elite group

nobility and elite group both are nouns.

Word	Noun	Adjective	Verb	Adverb
nobility	Yes	No	No	No
elite group	Yes	No	No	No

As nouns, elite group is a hypernym of nobility; that is, elite group is a word with a broader meaning than nobility:

nobility: a privileged class holding hereditary titles
elite group: a group or class of persons enjoying superior intellectual or social or economic status

Other hypernyms of nobility include elite.

nobility (noun)	elite group (noun)
the quality of elevation of mind and exaltation of character or ideals or conduct	a group or class of persons enjoying superior intellectual or social or economic status
a privileged class holding hereditary titles
the state of being of noble birth