first

Uncomplicated is a related term of first.

As a verb uncomplicated

is (uncomplicate).

As an adjective uncomplicated

is simple, not complicated, basic.

As a noun first is

ridge (of roof).

First is a related term of innate.

As a noun first

is ridge (of roof).

As an adjective innate is

inborn; native; natural; as, innate vigor; innate eloquence.

As a verb innate is

to cause to exist; to call into being.

As nouns the difference between fundamental and first

is that fundamental is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra while first is the person or thing in the first position.

As adjectives the difference between fundamental and first

is that fundamental is pertaining to the foundation or basis; serving for the foundation. Hence: Essential, as an element, principle, or law; important; original; elementary while first is preceding all others of a series or kind; the ordinal of one; earliest.

As an adverb first is

before anything else; firstly.

First is a related term of natural.

As nouns the difference between first and natural

is that first is ridge (of roof) while natural is .

As an adjective natural is

that exists and evolved within the confines of an ecosystem.

First is a related term of primeval.

As a noun first

is ridge (of roof).

As an adjective primeval is

belonging to the first ages.

As nouns the difference between first and birth

is that first is ridge (of roof) while birth is (uncountable) the process of childbearing; the beginning of life.

As an adjective birth is

a familial relationship established by childbirth.

As a verb birth is

(dated|or|regional) to bear or give birth to (a child).

As a noun first

is ridge (of roof).

As a verb filst is

(obsolete) to help; aid.