What is the difference between Accept and Except?

What is the difference between Accept and Except? : 
Accept : (verb) 

( 1 ) Take something offered willingly

She accepted my invitation to dinner. 

I accepted your apology. 

( 2 ) To say yes to an offer

She offered me a lift and I accepted it. 

I proposed marriage and she accepted my proposal. 

( 3 ) Receive someone / something as suitable or adequate

Will you accept a cheque? 

The college I applied has accepted me. 

( 4 ) Be willing or agree to something

He accepted the magistrate’s decision. 

I accepted the proposed changes. 

( 5 ) Take upon oneself a responsibility 

He accepts the blame for the accident. 

You must accept the consequences of your action. 

( 6 ) Take something as true, believe something

I do not accept your explanation. 

( 7 ) Treat something / someone ad welcome

He was never really accepted by his colleagues. 

Except : (noun) 

( 1 ) Not including some thing / someone – but not

This restaurant is open all days except Monday. 

Everyone except me got an invitation. 

I answered all the questions except the last one. 

Except : (noun) 

( 1 ) Except as a verb means exclude someone / something – leave someone / something out

Only children under five are excepted from this survey. 

We all had to take part in the training run with nobody excepted.