level vs grade

level and grade both are nouns.

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

As nouns, level and grade are synonyms defined as:

level and grade: a position on a scale of intensity or amount or quality

Other synonyms of level include degree.

As nouns, level and grade are synonyms defined as:

level and grade: a relative position or degree of value in a graded group

Other synonyms of level include tier.

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

Other hyponyms of level include strickle, strike, strickle.

level (noun)	grade (noun)
indicator that establishes the horizontal when a bubble is centered in a tube of liquid	a variety of cattle produced by crossbreeding with a superior breed
a structure consisting of a room or set of rooms at a single position along a vertical scale	a position on a scale of intensity or amount or quality
a flat surface at right angles to a plumb line	the gradient of a slope or road or other surface
a position on a scale of intensity or amount or quality	the height of the ground on which something stands
height above ground	a number or letter indicating quality (especially of a student's performance)
an abstract place usually conceived as having depth	a degree of ablaut
a specific identifiable position in a continuum or series or especially in a process	a body of students who are taught together
a relative position or degree of value in a graded group	one-hundredth of a right angle
	a relative position or degree of value in a graded group

level (adjective)	grade (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)	grade (verb)
become level or even	determine the grade of or assign a grade to
talk frankly with; lay it on the line	assign a rank or rating to
direct into a position for use	assign a grade or rank to, according to one's evaluation
aim at	level to the right gradient
make level or straight
tear down so as to make flat with the ground