standing army vs regular army

standing army and regular army both are nouns.

Word	Noun	Adjective	Verb	Adverb
standing army	Yes	No	No	No
regular army	Yes	No	No	No

As nouns, regular army is a hypernym of standing army; that is, regular army is a word with a broader meaning than standing army:

standing army: a permanent army of paid soldiers
regular army: a permanent organization of the military land forces of a nation or state

Other hypernyms of standing army include army, ground forces.

standing army (noun)	regular army (noun)
a permanent army of paid soldiers	a permanent organization of the military land forces of a nation or state