Realization
Real Feeling, Fully Realizing
noun, verbal noun
A reality feeling is what you get when something feels real. The realization sets in — whatever this thing is, you've got a real feeling that it's actually happening.
実感 means a realization that comes from lived experience. For example, when you're expecting a baby, you may understand that you're becoming a parent, but not truly have that realization until the baby is born or you hold them in your arms. It's the sense of something feeling real beyond theory or explanation — when it truly sinks in.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. The reading for 実 gets changed to じっ so be careful!
ようやく親になる実感が持てるようになってきました。
I'm starting to feel like a real parent at last.
母が死んだという知らせを聞いても、すぐには実感できなかった。
Even when I heard the news that my mother died, it didn't feel real at first.
アメリカへ行って初めて、日本はなんと小さい国かと実感した。
Only after I went to America did I realize how small Japan really is.