scale vs armor plating

scale and armor plating both are nouns.

Word	Noun	Adjective	Verb	Adverb
scale	Yes	No	Yes	No
armor plating	Yes	No	No	No

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

scale: a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
armor plating: specially hardened steel plate used to protect fortifications or vehicles from enemy fire

Other hyponyms of scale include armor plate, armour plate, plate armor, plate armour, horseshoe, shoe, shell plating.

scale (noun)	armor plating (noun)
a flattened rigid plate forming part of the body covering of many animals	specially hardened steel plate used to protect fortifications or vehicles from enemy fire
an indicator having a graduated sequence of marks
a measuring instrument for weighing; shows amount of mass
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
(music) a series of notes differing in pitch according to a specific scheme (usually within an octave)
a thin flake of dead epidermis shed from the surface of the skin
a specialized leaf or bract that protects a bud or catkin
relative magnitude
the ratio between the size of something and a representation of it
an ordered reference standard

scale (verb)	armor plating (verb)
measure with or as if with scales
size or measure according to a scale
remove the scales from
pattern, make, regulate, set, measure, or estimate according to some rate or standard
climb up by means of a ladder
reach the highest point of
take by attacking with scaling ladders
measure by or as if by a scale