Chain reactor and Furnace

Chain reactor noun - A nuclear reactor that uses controlled nuclear fission to generate energy.

Furnace and chain reactor are semantically related. In some cases you can replace term "Furnace" with "Chain reactor", this terms are similar.

Furnace noun - An enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc..

Chain reactor and furnace are semantically related. Sometimes you can replace phrase "Chain reactor" with "Furnace", this terms are similar.