radical chic vs affectation

radical chic and affectation both are nouns.

Word	Noun	Adjective	Verb	Adverb
radical chic	Yes	No	No	No
affectation	Yes	No	No	No

As nouns, affectation is a hypernym of radical chic; that is, affectation is a word with a broader meaning than radical chic:

radical chic: an affectation of radical left-wing views and the fashionable dress and lifestyle that goes with them
affectation: a deliberate pretense or exaggerated display

Other hypernyms of radical chic include affectedness, mannerism, pose.

radical chic (noun)	affectation (noun)
an affectation of radical left-wing views and the fashionable dress and lifestyle that goes with them	a deliberate pretense or exaggerated display