noun, verbal noun, の adjective
You extinguish an item and therefore have to expense it. This is how consumption works. Expense, extinguish, consumption.
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.
The majority of Japanese office workers spend most of their day at work.
It is clear that the consumption tax hike has depressed consumption.
Soymilk and natto consumption have been increasing.