Yes.
No, they are not capitalized, except, of course, in cases in which any common noun would be capitalized, like at the beginning of a sentence.
no
No, concert is a common noun .
No, one would not.
You always capitalise days of the week in a sentence.
Yes you do; you always capitalize the name of a state.
yes you would capatalize Social Security in a sentence.
yes....
Yes, days of the week are capitalized.
Last week I took a few days of work and visited my friends in Manchester.
Yes. And it's spelled "capital".
Captalize? What is this word?