power, might, authority / high spirits

relocation

relocate

establishment or institution of something together with something else

establish, found

heyday, prime, height

moving to a different group / entering a different household registry

enter a different household registry / move to a different group

the opposite sex (the other gender to which one is referring) / isomerism (phenomenon of the existence of isomers)

a parallel, a latitude (imaginary line parallel to the equator)