(computing) a worm

bomb

Salem (the capital city of Oregon) / Salem (a city in Illinois) / Salem (a city in Massachusetts) / Salem (a city in Indiana) / Salem (a city in Missouri) / Salem (a city in New Jersey)

hedonism

Bethlehem (a city in Palestine)

nihilism

heroism / admiration of heroes or heroic acts

(slang) "fleeting glimpse-ism": fetish for fleeting moments of flashing (exposing one's naked body or underwear)

(only in compounds) autumn, fall

lucid dream