lifestyle vs fashion

lifestyle and fashion both are nouns.

Word	Noun	Adjective	Verb	Adverb
lifestyle	Yes	No	No	No
fashion	Yes	No	Yes	No

As nouns, fashion is a hypernym of lifestyle; that is, fashion is a word with a broader meaning than lifestyle:

lifestyle: a manner of living that reflects the person's values and attitudes
fashion: how something is done or how it happens

Other hypernyms of lifestyle include manner, mode, style, way.

lifestyle (noun)	fashion (noun)
a manner of living that reflects the person's values and attitudes	characteristic or habitual practice
	consumer goods (especially clothing) in the current mode
	how something is done or how it happens
	the latest and most admired style in clothes and cosmetics and behavior

lifestyle (verb)	fashion (verb)
	make out of components (often in an improvising manner)