charger vs courser

charger and courser both are nouns.

Word	Noun	Adjective	Verb	Adverb
charger	Yes	No	No	No
courser	Yes	No	No	No

As nouns, charger and courser are synonyms defined as:

charger (noun)	courser (noun)
formerly a strong swift horse ridden into battle	swift-footed terrestrial plover-like bird of southern Asia and Africa; related to the pratincoles
a device that can hold a rechargeable battery by means of an electrical cable	formerly a strong swift horse ridden into battle
	a dog trained for coursing
	a huntsman who hunts small animals with fast dogs that use sight rather than scent to follow their prey