first

As nouns the difference between ultimate and first

is that ultimate is the most basic or fundamental of a set of things while first is ridge (of roof).

As an adjective ultimate

is final; last in a series.

Congenital is a related term of first.

As an adjective congenital

is congenital: originating before birth and continuing or progressing thereafter.

As a noun first is

ridge (of roof).

As an adjective immediate

is ; immediate (without delay).

As a noun first is

ridge (of roof).

As adjectives the difference between first and pristine

is that first is preceding all others of a series or kind; the ordinal of one; earliest while pristine is unspoiled; still with its original purity; uncorrupted or unsullied.

As an adverb first

is before anything else; firstly.

As a noun first

is the person or thing in the first position.

First is a related term of nascent.

As a noun first

is ridge (of roof).

As an adjective nascent is

emerging; just coming into existence.

Autochthonous is a related term of first.

As an adjective autochthonous

is native to the place where found; indigenous.

As a noun first is

ridge (of roof).

As a noun first

is ridge (of roof).

As a verb begins is

(begin).