As nouns the difference between pop and crepitus

is that pop is a social club and debating society at or pop can be (also in plural) a popular classical music concert while crepitus is (medicine) grating]], [[crackle|crackling or popping sounds and sensations experienced under the skin and joints.

As nouns the difference between crepitation and crepitus

is that crepitation is the act of crepitating or crackling while crepitus is grating, crackling or popping sounds and sensations experienced under the skin and joints.

Crepitus is a related term of crepitous.

As an adjective crepitous

is grating, crackling or popping.

As a noun crepitus is

grating, crackling or popping sounds and sensations experienced under the skin and joints.

Chaetodontidae is likely misspelled.

Chaetodontidae has no English definition.

As a noun butterflyfish is

any of a group of conspicuous tropical marine fish of the family Chaetodontidae; the bannerfish and coralfish are also included in this group. Butterflyfish are fairly small, mostly from 12 to 22 cm (c.7-9 in) in length.

As nouns the difference between bannerfish and butterflyfish

is that bannerfish is a large fish of the genus Histiophorus, of the swordfish family, with a broad banner-like dorsal fin; the sailfish while butterflyfish is any of a group of conspicuous tropical marine fish of the family Chaetodontidae; the bannerfish and coralfish are also included in this group. Butterflyfish are fairly small, mostly from 12 to 22 cm (c.7-9 in) in length.

As nouns the difference between coralfish and butterflyfish

is that coralfish is a kind of butterflyfish while butterflyfish is any of a group of conspicuous tropical marine fish of the family Chaetodontidae; the bannerfish and coralfish are also included in this group. Butterflyfish are fairly small, mostly from 12 to 22 cm (c.7-9 in) in length.

As a noun warrior

is a person who is actively engaged in battle, conflict or warfare; a soldier or combatant.

As an adjective warriorlike is

like a warrior.

As nouns the difference between underworld and undernet

is that underworld is (underworld) while undernet is the criminal underworld in cyberspace.

As adjectives the difference between costate and costellate

is that costate is having ribs, or the appearance of ribs while costellate is finely ribbed or costate.

As a noun consternation

is amazement or horror that confounds the faculties, and incapacitates for reflection; terror, combined with amazement; dismay.

As a verb consternate is

to cause consternation.