The best replacement for compartment is saloon.

The best alternatives to compartment are rated as following:
★★★★★  saloon
★★★★★  glove box
★★★★  open saloon
★★★★  saloon carriage
★★★  crush syndrome
★★★  department
★★  jockey box

Your alternative for compartment is not listed? Suggest!
Speaking about compartment, one probably shouldn't forget about drawer.

Other search terms related to compartment and their ratings are:
★★★★★ drawer
You have in mind a companion for compartment and it is not yet here? Propose!



Google Trends

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compartment
saloon
glove box