How do people who are totally deaf from birth articulate their thoughts?

If a person is totally deaf from birth.

They have never heard any language or words for that matter.

So they would pretty much have their own way of processing thoughts.

Pretty much have their own language.

I don't know if it would necessarily be words. Since they have never even heard a word.

When they see something new. Would they automatically think to call it something?

Would they know to call it something? Is that human instinct?

Deaf people, do not think in words they think in pictures. Their language is a visual language. Hearing people think in words because that is our language. The Deaf have a different Language. When they see something they would automatically think of the word/sign for that particular thing.