You searched for: “consonym”
consonym (s) (noun), consonyms (pl)
One of two or more words with the same consonant pattern; such as, macroevolutionary and microevolutionary; spectrophotometer and spectrophotometry.

Each pair of words has seventeen consonants with the same consonant patterns.

This entry is located in the following unit: -onym, -onymy, -onymic, -onymically, -onymous, -onymously, -nym (page 4)