Karma has like 15 different forms and definitions in sanskritt and they're all written down and westerners usually don't know much about all their meanings. In one way karma has to do with delusionally seeing the world as separate from oneself. In another it is habitual patterns, etc. I won't go into the rest because this place isn't really condusive to accurate spiritual teachings (lol). But karma originally was a concrete idea with many very specific definitions, not just an open-ended concept, if you care.