A theme could be "life or death" because throughout the novel because for an example Montags wife attempts suicide until montag finds her and calls for emergency help and saves her life, and while they were trying to help her its unclear if she was going to live or die, so while all this is happening monag starts to womder what life really is.
One of the early dinosaur fossils that were discovered was the pterodactyl and it was believed to be what a mad man said he had seen .he called it a dragon but he was disproven when he said it had a different structure
Or so it is believed
Since a common noun is the opposite of a proper........you cant really change it to a common because it is not a common noun and will never be.Period.
