Arthropod and Milliped

Arthropod noun - Invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin.

Milliped and arthropod are semantically related. In some cases you can replace term "Milliped" with "Arthropod", this nouns are similar.

Milliped noun - Any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs.

Arthropod and milliped are semantically related. You can use "Arthropod" instead a noun "Milliped".