litter vs palanquin

litter and palanquin both are nouns.

Word	Noun	Adjective	Verb	Adverb
litter	Yes	No	Yes	No
palanquin	Yes	No	No	No

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

litter: conveyance consisting of a chair or bed carried on two poles by bearers
palanquin: a closed litter carried on the shoulders of four bearers

Other hyponyms of litter include covered couch, palankeen, sedan, sedan chair, stretcher.

litter (noun)	palanquin (noun)
material used to provide a bed for animals	a closed litter carried on the shoulders of four bearers
conveyance consisting of a chair or bed carried on two poles by bearers
the offspring at one birth of a multiparous mammal
rubbish carelessly dropped or left about (especially in public places)

litter (verb)	palanquin (verb)
give birth to a litter of animals
make a place messy by strewing garbage around
strew