> coherent That's another one that's useful to think about: it's the same "-herent" as "adherent" and "inherent". One means "stick together", one means "stick

> coherent That's another one that's useful to think about: it's the same "-herent" as "adherent" and "inherent". One means "stick together", one means "stick to" and the other means "sticks into" (I.e. is part of). "Hesitate" comes from the same root and means "stick in place".