The Lord spoke to ancient man. We call that revelation. If he were to speak to modern man, it would be revelation. It would be the same operation as it was in ancient times. Since inspiration is a form of revelation, we can say also that, if God inspires modern man, it is revelation.
Revelation is no less, or more revelation because of WHO receives it.
Brutus and Caesar conversed. It was conversation. We converse with one another. It is conversation. God communicated to Abraham.