Despite what has just been said:
They are SYNONYMS nevertheless.
It’s a small car, yet it’s surprisingly spacious.
He has a good job, and yet he never seems to have any money.
Considering the explanations above, would you tell me if there is any difference between the followings?
This means, putting the word and would simply intensifies the matter. Because and also means in addition or something increased.
He has a good job, yet he never seems to have any money – a general sentence.
He has a good job, and yet he never seems to have any money – intensifies the matter and means it’s pity that in spite of having a good job, he does not have money.