Microchip and Semiconductor device

Microchip noun - Electronic equipment consisting of a small crystal of a silicon semiconductor fabricated to carry out a number of electronic functions in an integrated circuit.

Semiconductor device and microchip are semantically related. In some cases you can use "Semiconductor device" instead a noun "Microchip".

Semiconductor device noun - A conductor made with semiconducting material.

Microchip and semiconductor device are semantically related. Sometimes you can replace term "Microchip" with "Semiconductor device", this terms are similar.