mechanics vs carrying out

mechanics and carrying out both are nouns.

Word	Noun	Adjective	Verb	Adverb
mechanics	Yes	No	No	No
carrying out	Yes	No	No	No

As nouns, carrying out is a hypernym of mechanics; that is, carrying out is a word with a broader meaning than mechanics:

mechanics: the technical aspects of doing something
carrying out: the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it

Other hypernyms of mechanics include carrying into action, execution, performance.

mechanics (noun)	carrying out (noun)
the technical aspects of doing something	the act of accomplishing some aim or executing some order
the branch of physics concerned with the motion of bodies in a frame of reference	the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it