Is Mugging a Verb or Noun?

mugging noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com.

Is mugging a verb?

(transitive) To assault for the purpose of robbery. ... (intransitive) To exaggerate a facial expression for communicative emphasis; to make a face, to pose, as for photographs or in a performance, in an exaggerated or affected manner.

Is them a verb or noun?

They and them are both pronouns, that is words which are used in place of nouns or noun groups. They and them are always used in place of plural nouns or noun groups in the third person.