1. necessary
It is necessary.
I made up my mind, then and there, that I would get the necessary million dollars within a week.
In order to study computational linguistics it's necessary to know various languages, however, one also has to be familiar with the use of computers.
According to functionalist theory, acne outbreaks provide a necessary limit on the number of prom attendees.
These things are much better spoken about face to face so that we can draw diagrams and demonstrate timings on logic analyzers and oscilloscopes where necessary.
So it is essential that you take the attitude of looking up yourself the information you feel necessary.
That the king can do no wrong, is a necessary and fundamental principle of the English constitution.
Beyond the Right's populism and the dispersion of the Left which have made this situation possible, I take full responsibility for this defeat and draw the necessary conclusions by retiring from political life after the end of the presidential election.
Fish do not have the brain development that is necessary for the psychological experience of pain or any other type of awareness.
Всё, что нужно|Everything that is necessary
It then became necessary to settle the best route for the line to follow; and that was determined, in the first place, by the shape of the land it had to cross.
She keeps asking us what we would like to wear during our holidays although she knows that we need only a few necessary things.
2. essential
This is essentiale
Pocket calculators are as cheap to buy as a pair of socks, and as essential to thousands of British school children as a pencil and eraser.
From our human experience and history, at least as far as I am informed, I know that everything essential and great has only emerged when human beings had a home and were rooted in a tradition. Today’s literature is, for instance, largely destructive.
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.
An essential condition for a helpful interview is a quiet room in which doctor and parents can sit comfortably and in private without being interrupted.
I'm sure you're thinking to yourself, 'Why is this guy making such a big deal of this?' But make no mistake. This is essential.
The command of communication skills in multiple languages is essential to any company providing goods and services on the world market.
Some knowledge of foreign languages, of Spanish in particular, is essential.
Some Westerners may think our houses are lacking in everything they consider essential.
When the articles of incorporation are complete it is essential to go to the notary public's office to undertake certification of the articles drawn up.
she's a spacial filmmaker, she has absolutly incredible way of telling the story, and it was essential
Elle magazine has a great section on fall’s essential boots and bags.
The essential problem to choose summer holiday will be absence one of my colleague at work.