meritocracy vs social structure

meritocracy and social structure both are nouns.

Word	Noun	Adjective	Verb	Adverb
meritocracy	Yes	No	No	No
social structure	Yes	No	No	No

As nouns, social structure is a hypernym of meritocracy; that is, social structure is a word with a broader meaning than meritocracy:

meritocracy: a form of social system in which power goes to those with superior intellects
social structure: the people in a society considered as a system organized by a characteristic pattern of relationships

Other hypernyms of meritocracy include social organisation, social organization, social system, structure.

meritocracy (noun)	social structure (noun)
the belief that rulers should be chosen for their superior abilities and not because of their wealth or birth	the people in a society considered as a system organized by a characteristic pattern of relationships
a form of social system in which power goes to those with superior intellects