There are categories of nouns like:proper nouns, common nouns, material nouns, compound nouns, countable nouns, uncountable(nouns) or mass nouns, collective nouns, concrete nouns, abstract nouns, pronouns.
I heard a sentence in a TV series as:
You've also made clear your desire to replace me as leader of the Decepticons.
I wonder what kind of noun is the leader in this context and why it is not preceded by an article?
Another example from The Hound of the Baskervilles
I never hurt man or woman in my life that I know of.
Would the following sentences be grammatically correct?
I never hurt a man or a woman in my life that I know of.
(a could also be replaced by any).
I never hurt men or women in my life that I know of.