millipede vs milliped

millipede and milliped both are nouns.

Word	Noun	Adjective	Verb	Adverb
millipede	Yes	No	No	No
milliped	Yes	No	No	No

As nouns, millipede and milliped are synonyms defined as:

millipede and milliped: any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs

Other synonyms of millipede include millepede.

millipede (noun)	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	any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs