get down vs demoralise

get down and demoralise both are verbs.

Word	Noun	Adjective	Verb	Adverb
get down	No	No	Yes	No
demoralise	No	No	Yes	No

As verbs, get down and demoralise are synonyms defined as:

Other synonyms of get down include cast down, deject, demoralize, depress, dismay, dispirit.

get down (verb)	demoralise (verb)
take the first step or steps in carrying out an action	lower someone's spirits; make downhearted
put down in writing; of texts, musical compositions, etc.	corrupt morally or by intemperance or sensuality
pass through the esophagus as part of eating or drinking
lower someone's spirits; make downhearted
move something or somebody to a lower position
alight from (a horse)
lower (one's body) as by kneeling