stand (v.) Look up stand at Dictionary.com
Old English standan (class VI strong verb; past tense stod, past participle standen), from Proto-Germanic *sta-n-d- (cf. Old Norse standa, Old Saxon and Gothic standan, Old High German stantan, Swedish stå, Dutch staan, German stehen), from PIE root *sta- "to stand" (see stet).

Sense of "to exist, be present" is attested from c.1300. Meaning "to pay for as a treat" is from 1821. Phrase stands to reason (1620) is from earlier stands (is constant) with reason. Phrase stand pat is originally from poker (1882); stand down in the military sense of "go off duty" is first recorded 1916. Standing ovation attested by 1968; standing army is from c.1600.
stand (n.) Look up stand at Dictionary.com
"pause, delay," Old English, from the root of stand (v.). Meaning "place of standing, position" is from c.1300; figurative sense is from 1590s. Sense of "action of standing or coming to a position" is attested from late 14c., especially in reference to fighting. Meaning "raised platform for a hunter or sportsman" is attested from c.1400.

Sense of "stall or booth" is first recorded c.1500. Military meaning "complete set" (of arms, colors, etc.) is from 1721, often a collective singular. Sense of "standing growth of trees" is 1868, American English. Theatrical sense of "each stop made on a performance tour" is from 1896. The word was formerly also slang for "an erection" (1867).