'Sensor' is a piece of equipment that senses things (whatever it's set for). 'Censor' is a person that does censorship, i.e. things that can or can't be published in the interests of public taste. There was a famous High Court case against censorship concerning D. H. Lawrence's 'Lady Chatterley's Lover' in the 1960s.
'Thatcher' ... Say that word in my dads house he goes ****in mental !!! Then you hear some right swear words come out of his mouth....... "****in BITCH" !!!!!
You are a very polite lot - I'm surprised none of you suggested 'Newcastle.' .... now, shall I cause mischief on their board ?