DISCRIMINATE, distinguish, severalize [obs.]; separate; draw the line, sift; separate -, winnow- the chaff from the wheat; separate the wheat from the tares; separate the sheep from the goats; split hairs.
estimate (measure) [See Measurement]; tip, tip off, sum up, criticize; know which is which, know whats what [colloq.], know ones way about, know a thing or two, know what oclock it is, know the time of day, have cut ones eyeteeth, know the ways of the world [all colloq.]; know a hawk from a handsaw [Hamlet].
take into -account, - consideration; give -, allow- due weight to; weigh carefully.