How are nocturnal and diurnal similar?

Answer 1

The word "nocturnal" means that an animal is active (foraging, hunting) primarily at night. Examples are owls, bats, and some mammals that avoid daytime predators.

The term "diurnal" means that an animal is active during the daytime, and normally sleeps at night. Many birds and mammals are diurnal.

A third term is "crepuscular" which means active during the transition periods, around sunset and sunrise. Domestic cats are often crepuscular, as are many wild dogs.

Answer 2

Diurnal means active in the daytime, and nocturnal at night.

Answer 3

Some insects are both nocturnal and diurnal.