life vs smartness

life and smartness both are nouns.

Word	Noun	Adjective	Verb	Adverb
life	Yes	No	No	No
smartness	Yes	No	No	No

As nouns, smartness is a hyponym of life; that is, smartness is a word with a more specific, narrower meaning than life:

life (noun)	smartness (noun)
living things collectively	elegance by virtue of being fashionable
animation and energy in action or expression	liveliness and eagerness
the experience of being alive; the course of human events and activities	intelligence as manifested in being quick and witty
an account of the series of events making up a person's life	a kind of pain such as that caused by a wound or a burn or a sore
a motive for living
a living person
the organic phenomenon that distinguishes living organisms from nonliving ones
the condition of living or the state of being alive
a characteristic state or mode of living
the course of existence of an individual; the actions and events that occur in living
the period during which something is functional (as between birth and death)
the period between birth and the present time
the period from the present until death
a prison term lasting as long as the prisoner lives