They are all plain
nakoach (naw-ko'-akh)
straightforward, i.e. (figuratively), equitable, correct, or (abstractly), integrity -- plain, right, uprightness.
to him that understandeth
biyn (bene)
to separate mentally (or distinguish), i.e.(generally) understand
and right
yashar (yaw-shawr')
straight -- convenient, equity, Jasher, just, meet(-est), + pleased well right(-eous), straight, (most) upright(-ly, -ness).
to them that find
matsa' (maw-tsaw')
to come forth to, i.e. appear or exist; transitively, to attain, i.e. find or acquire; figuratively, to occur, meet or be present
knowledge
da`ath (dah'-ath)
knowledge -- cunning, (ig-)norantly, know(-ledge), (un-)awares (wittingly).
