Tug is a related term of reflex.
In obsolete|lang=en terms the difference between tug and reflex
is that
tug is (obsolete) a kind of vehicle used for conveying timber and heavy articles while
reflex is (obsolete) reflection; the light reflected from an illuminated surface to one in shade.
As verbs the difference between tug and reflex
is that
tug is to pull or drag with great effort while
reflex is to bend, turn back or reflect.
As nouns the difference between tug and reflex
is that
tug is a sudden powerful pull while
reflex is an automatic response to a simple stimulus which does not require mental processing.
As an adjective reflex is
bent, turned back or reflected.