As adjectives the difference between sempiternal and sempiterne

is that sempiternal is seemingly everlasting or eternal while sempiterne is sempiternal; everlasting.

As adjectives the difference between everlasting and sempiterne

is that everlasting is lasting or enduring forever; existing or continuing without end; immortal; eternal while sempiterne is sempiternal; everlasting.

As a noun everlasting

is an everlasting flower.

As nouns the difference between rhombencephalon and metencephalon

is that rhombencephalon is hindbrain while metencephalon is (anatomy) the portion of the embryonic rhombencephalon from which the pons and cerebellum arise.

In anatomy terms the difference between pons and metencephalon

is that pons is a band of nerve fibres, the pons Varolii, within the brain stem while metencephalon is the portion of the embryonic rhombencephalon from which the pons and cerebellum arise.

As nouns the difference between cerebellum and metencephalon

is that cerebellum is (neuroanatomy) part of the hindbrain in vertebrates in humans it lies between the brainstem and the cerebrum it plays an important role in sensory perception, motor output, balance and posture while metencephalon is (anatomy) the portion of the embryonic rhombencephalon from which the pons and cerebellum arise.

As nouns the difference between fear and bibliophobia

is that fear is grass while bibliophobia is the fear or dislike of books.

As nouns the difference between dislike and bibliophobia

is that dislike is an attitude or a feeling of distaste or aversion while bibliophobia is the fear or dislike of books.

As a verb dislike

is (obsolete|transitive) to displease; to offend (in third-person only).

As nouns the difference between books and bibliophobia

is that books is while bibliophobia is the fear or dislike of books.

As a verb books

is (book).

As a noun commander

is one who exercises control and direction of a military or naval organization.

Cinc is likely misspelled.

Cinc has no English definition.

As a noun chief

is (leader of group etc)A leader or head of a group of people, organisation, etc.

As an adjective chief

is primary; principal.