As nouns the difference between insect and eclosion

is that insect is an arthropod in the class insecta, characterized by six legs, up to four wings, and a chitinous exoskeleton while eclosion is hatching, eclosion.

Pupa is likely misspelled.

Pupa has no English definition.

As a noun eclosion is

the emergence of an insect from the pupa case, or of a larva from the egg.

As nouns the difference between case and eclosion

is that case is (label) abstract feature of a noun phrase that determines its function in a sentence, such as a grammatical case and a position while eclosion is hatching, eclosion.

As nouns the difference between larva and eclosion

is that larva is mask while eclosion is hatching, eclosion.

As nouns the difference between egg and eclosion

is that egg is (zoology|countable) an approximately spherical or ellipsoidal body produced by birds, snakes, insects and other animals, housing the embryo during its development while eclosion is hatching, eclosion.

As a verb egg

is to throw eggs at or egg can be to encourage, incite.

As nouns the difference between gradient and mechanotaxis

is that gradient is gradient while mechanotaxis is (biology) the movement of a cell along a rigidity gradient.

As a noun eclogite

is (geology) a coarse-grained metamorphic rock, a mixture of pyroxene, quartz, and feldspar with inclusions of red garnet.

As an adjective eclogitic is

of, pertaining to, or composed of eclogite.

As a noun eclosion

is hatching, eclosion.

As a verb eclose is

.

Eclosion is a alternative form of eclosure.

In biology terms the difference between eclosure and eclosion

is that eclosure is the emergence of an insect from the pupa case, or of a larva from the egg while eclosion is the emergence of an insect from the pupa case, or of a larva from the egg.

As nouns the difference between emergence and eclosion

is that emergence is emergence while eclosion is hatching, eclosion.