palette vs armor plate

palette and armor plate both are nouns.

Word	Noun	Adjective	Verb	Adverb
palette	Yes	No	No	No
armor plate	Yes	No	No	No

As nouns, armor plate is a hypernym of palette; that is, armor plate is a word with a broader meaning than palette:

palette: one of the rounded armor plates at the armpits of a suit of armor
armor plate: specially hardened steel plate used to protect fortifications or vehicles from enemy fire

Other hypernyms of palette include armor plating, armour plate, plate armor, plate armour.

palette (noun)	armor plate (noun)
board that provides a flat surface on which artists mix paints and the range of colors used	specially hardened steel plate used to protect fortifications or vehicles from enemy fire
one of the rounded armor plates at the armpits of a suit of armor
the range of colour characteristic of a particular artist or painting or school of art