concourse vs horde

concourse and horde both are nouns.

Word	Noun	Adjective	Verb	Adverb
concourse	Yes	No	No	No
horde	Yes	No	No	No

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

Other hyponyms of concourse include hive, host, legion, herd, ruck.

concourse (noun)	horde (noun)
a coming together of people	a vast multitude
a wide hallway in a building where people can walk	a moving crowd
a large gathering of people	a nomadic community