life-style vs lifestyle

life-style and lifestyle both are nouns.

Word	Noun	Adjective	Verb	Adverb
life-style	Yes	No	No	No
lifestyle	Yes	No	No	No

As nouns, life-style and lifestyle are synonyms defined as:

life-style and lifestyle: a manner of living that reflects the person's values and attitudes

Other synonyms of life-style include life style, modus vivendi.

life-style (noun)	lifestyle (noun)
a manner of living that reflects the person's values and attitudes	a manner of living that reflects the person's values and attitudes