Antenna and Dipole

Antenna noun - One of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste.

Dipole and antenna are semantically related. In some cases you can replace term "Dipole" with "Antenna", this nouns are similar.

Dipole noun - An aerial half a wavelength long consisting of two rods connected to a transmission line at the center.

Antenna and dipole are semantically related. You can use "Antenna" instead a noun "Dipole".