Consist of; be made up of

ex.: 

The country comprises twenty states.

Comprise : verb

Calculate or reckon

ex.:

We can compute the exact increase.

Compute : verb

Computable : adj

Form or devise in the mind

ex.:
The dam project was originally conceived in 1977.
Conceive : verb

CONCENTRATE

Focus one’s attention or mental effort on a particular object or activity
ex.:

She couldn’t concentrate on the movie.
Concentrate : verb

CONCEPT

An abstract idea

ex.:
Structuralism is a difficult concept.
Concept : noun

CONCLUDE

Bring (something) to an end

ex.:
They conclude their study with these words.
Conclude : verb

CONCURRENT

Existing, happening, or done at the same time
ex.:

There are three concurrent art fairs around the city.
Concurrent : adj
Concurrently : adv

CONDUCT

Organize and carry out

ex.:
In the second trial he conducted his own defense.
Conduct : verb

CONFER

Grant or bestow

ex.:
Moves were made to confer an honorary degree on her.
Confer : verb
Conferment : noun

CONFINE

Keep or restrict someone or something with certain limits of

ex.:
He does not confine his messages to politics.
Confine : verb
Confinement : noun

CONFIRM

Establish the truth or correctness of

ex.:
If these fears are confirmed, the outlook for the economy will be dire.
Confirm : verb
Confirmative : adj

CONFLICT

A serious disagreement or argument, typically a protracted one

ex.:
Doctors often comes into conflict with politicians.
Conflict : noun
conflictual : adj

CONFORM

Comply with rules, standards, or laws

ex.:
The kitchen does not conform to hygiene regulations.
Conform : verb

CONSENT

Permission for something to happen or agreement to do something

ex.:
No change may be made without the consent of all the partners.
Consent : noun

CONSEQUENT

Following as a result or effect

ex.:
Labor shortages would be created with a consequent increases in wages.
Consequent : adj

CONSIDERABLE

Notably in large size, amount, or extent

ex.:
A position of considerable influence.
Considerable : adj
Considerably : adv

CONSIST

Be composed or made up of
ex.:

The exhibition consists of 180 drawings.
Consist : verb

CONSTANT

Occurring continuously over a period of time

ex.:
The pain is constant.
Constant : adj
Constantly : adv

CONSTITUTE

Be a part of a whole
ex.:

Single parents constitute a great proportion of the poor.
Constitute : verb

CONSTRAIN

Severely restrict the scope, extent, or activity of
ex.:

Agricultural development is considerably constrained by climate.
Constrain : verb
Constrainedly : adv

CONSTRUCT

Build or erect
ex.:

A company that constructs oil rigs.
Construct : verb
Constructor : noun

CONSULT

Seek information or advice from
ex.:

You should consult a financial advisor.
Consult : verb
Consultative : adj

Eat, drink, or ingest

EX.: 

People consume a good deal of sugar in drinks. Consume : verb

Consumingly : adv

state of touching or communication

ex.:

Our troops are in contact with the enemy.

Contact ( noun )

Contact ( verb )