Volcanic Smoke
noun
Sometimes volcanoes erupt with just smoke instead of lava or fire. That's called an volcanic smoke.
ふんえん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
噴煙を上げる桜島の写真を撮りました。
I took a picture of the volcanic smoke rising over Sakurajima.