cover vs scale

cover and scale both are nouns.

Word	Noun	Adjective	Verb	Adverb
cover	Yes	No	Yes	No
scale	Yes	No	Yes	No

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

cover: a natural object that covers or envelops
scale: a flattened rigid plate forming part of the body covering of many animals

cover (noun)	scale (noun)
the act of concealing the existence of something by obstructing the view of it	a flattened rigid plate forming part of the body covering of many animals
fire that makes it difficult for the enemy to fire on your own individuals or formations	an indicator having a graduated sequence of marks
a false identity and background (especially one created for an undercover agent)	a measuring instrument for weighing; shows amount of mass
a recording of a song that was first recorded or made popular by somebody else	a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
bedding that keeps a person warm in bed	(music) a series of notes differing in pitch according to a specific scheme (usually within an octave)
a covering that serves to conceal or shelter something	a thin flake of dead epidermis shed from the surface of the skin
covering for a hole (especially a hole in the top of a container)	a specialized leaf or bract that protects a bud or catkin
the protective covering on the front, back, and spine of a book	relative magnitude
a natural object that covers or envelops	the ratio between the size of something and a representation of it
a fixed charge by a restaurant or nightclub over and above the charge for food and drink	an ordered reference standard

cover (verb)	scale (verb)
sit on (eggs)	measure with or as if with scales
clothe, as if for protection from the elements	size or measure according to a scale
protect by insurance	remove the scales from
act on verbally or in some form of artistic expression	pattern, make, regulate, set, measure, or estimate according to some rate or standard
be responsible for reporting the details of, as in journalism	climb up by means of a ladder
maintain a check on; especially by patrolling	reach the highest point of
protect or defend (a position in a game)	take by attacking with scaling ladders
hold within range of an aimed firearm	measure by or as if by a scale
play a higher card than the one previously played
be responsible for guarding an opponent in a game
provide with a covering or cause to be covered
form a cover over
copulate with a female, used especially of horses
cover as if with a shroud
put something on top of something else
travel across or pass over
hide from view or knowledge
spread over a surface to conceal or protect
be sufficient to meet, defray, or offset the charge or cost of
to take an action to protect against future problems
invest with a large or excessive amount of something
help out by taking someone's place and temporarily assuming his responsibilities
provide for
span an interval of distance, space or time
include in scope; include as part of something broader; have as one's sphere or territory
make up for shortcomings or a feeling of inferiority by exaggerating good qualities