To Exist
する verb
Know how 存在 is existence? Well, make it a verb and then you have to exist.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
ワニカニが存在してくれたおかげで、ついに漢字を覚えることができました。
Thanks to the existence of WaniKani, I was finally able to memorize kanji characters.
私は死後の世界は存在すると思います。
I think that life after death exists.
感情をそこまで態度に出す人が存在するとは思ってもみなかったよ。
I never even imagined that there could be someone who would let their emotions show to that extent in their attitude.