Butterfly vs Moth 
Butterfly
Moth
Butterfly
Moth
Antennae
Clubbed at the tips
Various, most are feathery or silky
Wing
Scales more brightly colored. Hindwings without hooks.
With bristles and of paler colors. Hooks at base of hindwings to connect forewings and hindwings.
Body
Slimmer
Thicker
Flying pattern
Slow and elegant
Erratic and clumsy
Posture at rest
Wings folded up and point upwards
Wings in horizontal posture
Active time
Mostly diurnal
Mostly nocturnal