Difference between Mosquito Hawk and Nighthawk

MOSQUITO HAWK vs NIGHTHAWK: NOUN

The night-hawk, a caprimulgine bird, Chordeiles popetue, or some other species of the same genus.
A dragon-fly.
Slender-bodied non-stinging insect having iridescent wings that are outspread at rest; adults and nymphs feed on mosquitoes etc.
Mainly nocturnal North American goatsucker

A person whose preference or custom is to remain awake and active during the night and the early morning hours.
A New World nightjar.
Any of several mainly nocturnal North American goatsuckers, especially Chordeiles minor, or the related European goatsucker Caprimulgus europaeus, also called the nightjar.
One of certain petrels of the genus Œstrelata: as, the white night-hawk or mutton-bird, Œ. lessoni.
The night-jar or goatsucker, Caprimulgus curopæus.
A caprimulgine bird of the genus Chordeiles.
One who prowls about at night; specifically, a night cabman or his cab or horse.
A night owl.
Any of several nightjars found throughout the Americas, having grayish-brown plumage that mimics leaves on the forest floor, especially Chordeiles minor.
A person who likes to be active late at night
Mainly nocturnal North American goatsucker

Ant lion, Robber fly, Damselfly, Dipterous insect, Neuropteron, Snakefly, Lepidopterous insect, Snake feeder, Snake doctor, Skeeter hawk, Bullbat, Sewing needle, Darning needle, Nighthawk, Dragonfly

Cattle egret, Sparrow, Turkey vulture, Snowy owl, Hawk owl, Buzzard, Owl, Nightjar, Hawk, Peregrine, Falcon, Bullbat, Mosquito hawk, Nightbird, Night owl

Insectology, Japanese beetle, Luna moth, Hymenopterous insect, Stable fly, Ant lion, Robber fly, Damselfly, Dipterous insect, Neuropteron, Snakefly, Lepidopterous insect, Bullbat, Darning needle, Dragonfly

Downy woodpecker, Kingbird, Grackle, Buteo, Cattle egret, Turkey vulture, Snowy owl, Hawk owl, Owl, Nightjar, Hawk, Peregrine, Falcon, Mosquito hawk, Bullbat