level vs floor

level and floor both are nouns.

Word	Noun	Adjective	Verb	Adverb
level	Yes	Yes	Yes	No
floor	Yes	No	Yes	No

As nouns, level and floor are synonyms defined as:

level and floor: a structure consisting of a room or set of rooms at a single position along a vertical scale

Other synonyms of level include storey, story.

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

level: a flat surface at right angles to a plumb line
floor: the inside lower horizontal surface (as of a room, hallway, tent, or other structure)

Other hyponyms of level include flooring, paved surface, platform.

level (noun)	floor (noun)
indicator that establishes the horizontal when a bubble is centered in a tube of liquid	the inside lower horizontal surface (as of a room, hallway, tent, or other structure)
a structure consisting of a room or set of rooms at a single position along a vertical scale	a structure consisting of a room or set of rooms at a single position along a vertical scale
a flat surface at right angles to a plumb line	a large room in a exchange where the trading is done
a position on a scale of intensity or amount or quality	the legislative hall where members debate and vote and conduct other business
height above ground	the parliamentary right to address an assembly
an abstract place usually conceived as having depth	a lower limit
a specific identifiable position in a continuum or series or especially in a process	the occupants of a floor
a relative position or degree of value in a graded group	the bottom surface of any lake or other body of water
	the ground on which people and animals move about
	the lower inside surface of any hollow structure

level (adjective)	floor (adjective)
of the score in a contest
being on a precise horizontal plane
not showing abrupt variations
having a surface without slope, tilt in which no part is higher or lower than another
oriented at right angles to the plumb

level (verb)	floor (verb)
become level or even	knock down with force
talk frankly with; lay it on the line	surprise greatly; knock someone's socks off
direct into a position for use
aim at
make level or straight
tear down so as to make flat with the ground