central

Internal is a related term of central.

As adjectives the difference between internal and central

is that internal is inside of something while central is being in the centre.

As adjectives the difference between unified and central

is that unified is united into a whole while central is being in the centre.

As a verb unified

is (unify).

As an adjective central is

being in the centre.

Inward is a related term of central.

As adjectives the difference between inward and central

is that inward is situated on the inside; that is within, inner; belonging to the inside while central is being in the centre.

As an adverb inward

is towards the inside.

As a noun inward

is (obsolete|chiefly|in the plural) that which is inward or within; the inner parts or organs of the body; the viscera.

As adjectives the difference between decentralized and central

is that decentralized is not centralized; having no center or several centers while central is being in the centre.

As a verb decentralized

is (decentralize).

As adjectives the difference between centralized and central

is that centralized is having things physically towards the center; consolidated or concentrated while central is being in the centre.

As a verb centralized

is past tense of centralize.

Central is a related term of chief.

As adjectives the difference between central and chief

is that central is being in the centre while chief is primary; principal.

As a noun chief is

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

As adjectives the difference between primary and central

is that primary is the first in a group or series while central is being in the centre.

As a noun primary

is a primary election; a preliminary election to select a political candidate of a political party.

As a verb primary

is to take part in a primary election.

As adjectives the difference between federal and central

is that federal is federal while central is being in the centre.

Underlying is a related term of central.

As adjectives the difference between underlying and central

is that underlying is lying underneath while central is being in the centre.