Tweak is a related term of snag.
As nouns the difference between tweak and snag
is that
tweak is a sharp pinch or jerk; a twist or twitch while
snag is a stump or base of a branch that has been lopped off; a short branch, or a sharp or rough branch; a knot; a protuberance or
snag can be (uk|dialect|obsolete) a light meal or
snag can be a misnaged, an opponent to chassidic judaism (more likely modern, for cultural reasons).
As verbs the difference between tweak and snag
is that
tweak is to pinch and pull with a sudden jerk and twist; to twitch while
snag is to catch or tear (eg fabric) upon a rough surface or projection.