"register" - might indicate that someone has to register as a second-class citizen, enemy alien, etc.
"bit" - might imply that someone is only a 'bit player', leading to feelings of inferiority.
"tool" - an obviously offensive word meaning that someone is only fit to be used by others.
"terminal" - we need to be sensitive about words that bring up the concept of death, to avoid triggering effects.
"inheritance" - individuals are not the product of their ancestry!
"class" - we don't need a class-structured society, that's a leftover from a feudal past.
"polymorphism" - too close to hermaphrodite, must be eliminated.