burden vs saddle

burden and saddle both are nouns.

Word	Noun	Adjective	Verb	Adverb
burden	Yes	No	Yes	No
saddle	Yes	No	Yes	No

As verbs, burden and saddle are synonyms defined as:

Other synonyms of burden include charge.

As verbs, saddle is a hyponym of burden; that is, saddle is a word with a more specific, narrower meaning than burden:

Other hyponyms of burden include overburden, plumb.

burden (noun)	saddle (noun)
weight to be borne or conveyed	posterior part of the back of a domestic fowl
the central idea that is expanded in a document or discourse	a seat for the rider of a horse or other animal
an onerous or difficult concern	a seat for the rider of a bicycle
the central meaning or theme of a speech or literary work	a piece of leather across the instep of a shoe
	cut of meat (especially mutton or lamb) consisting of part of the backbone and both loins
	a pass or ridge that slopes gently between two peaks (is shaped like a saddle)

burden (verb)	saddle (verb)
impose a task upon, assign a responsibility to	impose a task upon, assign a responsibility to
weight down with a load	put a saddle on
	load or burden; encumber