The difference between Primitive and Radical

Primitive as a noun (linguistics):

An original or primary word; a word not derived from another, as opposed to .

Primitive as a noun:

A member of a primitive society.

Primitive as a noun:

A simple-minded person.

Primitive as a noun (computing, programming):

A data type that is built into the programming language, as opposed to more complex structures.

Primitive as a noun (computing, programming):

Any of the simplest elements (instructions, statements, etc.) available in a programming language.

Primitive as a noun:

A basic geometric shape from which more complex shapes can be constructed.

Primitive as a noun (mathematics):

A function whose derivative is a given function; an antiderivative.

Primitive as an adjective:

Of or pertaining to the beginning or origin, or to early times; original; primordial; primeval; first.

Primitive as an adjective:

Of or pertaining to or harking back to a former time; old-fashioned; characterized by simplicity.

Primitive as an adjective:

Crude, obsolete.

Primitive as an adjective (grammar):

Original; primary; radical; not derived.

Primitive as an adjective (biology):

Occurring in or characteristic of an early stage of development or evolution.

Primitive as an adjective (maths):

Not derived from another of the same type

Radical as an adjective:

Favoring fundamental change, or change at the root cause of a matter.

Radical as an adjective (botany, not comparable):

Pertaining to a root .

Radical as an adjective:

Pertaining to the basic or intrinsic nature of something.

Radical as an adjective:

Thoroughgoing; far-reaching.

Radical as an adjective (lexicography, not comparable):

Of or pertaining to the root of a word.

Radical as an adjective (phonology, phonetics, not comparable, of a sound):

Produced using the root of the tongue.

Radical as an adjective (chemistry, not comparable):

Involving free radicals.

Radical as an adjective (math):

Relating to a radix or mathematical root.

Radical as an adjective (slang, 1980s & 1990s):

Excellent; awesome.

Radical as a noun (historical: 19th-century Britain):

A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).

Radical as a noun (historical: early 20th-century France):

A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.

Radical as a noun:

A person with radical opinions.

Radical as a noun (arithmetic):

A root (of a number or quantity).

Radical as a noun (linguistics):

In logographic writing systems such as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic.

Radical as a noun (linguistics):

In Semitic languages, any one of the set of consonants (typically three) that make up a root.

Radical as a noun (chemistry):

A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.

Radical as a noun (organic chemistry):

A free radical.

Radical as a noun (algebra, commutative algebra, ring theory, of an [[ideal]]):

Given an ideal I in a commutative ring R, another ideal, denoted Rad(I) or \sqrt{I}, such that an element x ∈ R is in Rad(I) if, for some positive integer n, xn ∈ I; equivalently, the intersection of all prime ideals containing I.

Radical as a noun (algebra, ring theory, of a [[ring]]):

Given a ring R, an ideal containing elements of R that share a property considered, in some sense, "not good".

Radical as a noun (algebra, ring theory, of a [[module]]):

The intersection of maximal submodules of a given module.

Radical as a noun (number theory):

The product of the distinct prime factors of a given positive integer.