lotus position vs posture

lotus position and posture both are nouns.

Word	Noun	Adjective	Verb	Adverb
lotus position	Yes	No	No	No
posture	Yes	No	Yes	No

As nouns, posture is a hypernym of lotus position; that is, posture is a word with a broader meaning than lotus position:

Other hypernyms of lotus position include attitude, position.

lotus position (noun)	posture (noun)
a sitting position with the legs crossed; used in yoga	the arrangement of the body and its limbs
	characteristic way of bearing one's body
	capability in terms of personnel and materiel that affect the capacity to fight a war
	a rationalized mental attitude

lotus position (verb)	posture (verb)
	assume a posture as for artistic purposes
	behave affectedly or unnaturally in order to impress others