Contraption and Mod con

Contraption noun - An interesting and often novel device with a practical use.

Mod con and contraption are semantically related. In some cases you can replace phrase "Mod con" with "Contraption", this terms are similar.

Mod con noun - Modern convenience; the appliances and conveniences characteristic of a modern house.

Contraption and mod con are semantically related. Sometimes you can use "Contraption" instead a noun phrase "Mod con".