Deadly Sins: Greed & Gluttony

Considering the traditional seven deadly sins, two of them seem to me to be variations on a theme:

Greed is the excessive acquisition of goods for storage/hoarding.

Gluttony is the excessive acquisition of goods for consumption.

The action upon the collected goods differentiates between greed and gluttony, but the two sins (at least when expressed as above) seem to share excessive acquisition as the negative action. In other words, at least these two out of the seven say it is sinful to take more than is necessary.