If this is for the Sunday Express crossword, Sunday Sept 20th, question 20 across, we have put 'covet' which is to wish, long or crave after something.
The noun 'envy' is a word for a feeling of discontented or resentful longing aroused by someone else's possessions, qualities, or luck; a word for an emotion. The verb 'envy' is to desire to have something belonging to someone else; to resent someone for something that they have or are.
The possessive form is someone else's (belonging to or referring to an unnamed or unknown person).
An approach is an act of coming near to someone or something else, or a passage by which someone or something can come close to something else.
a souvenir
There is no good reason why you should crave to be a witch, and I would advise that you become something else, of benefit to your society.
Someone was doing something. WHEREAS someone else was doing something else. It's basically a synonym to 'at the same time', 'meanwhile', or 'but'. It would be a better idea to have the two sentences joined, though. i.e. Someone was doing something, WHEREAS someone else was doing something else.
A "Trust Agreement"
If someone is trying to one up someone else, it usually means they are trying to do something better then someone else. This term can be used in sports, or even in daily activities, where someone is trying to be better at something than someone else.
A Professional
A blocker is someone who or something which blocks something else.
A padder is someone who, or something which, pads something else.
A blocker is someone who or something which blocks something else.