homonomous
/hɒməˈnuːməs/Definitions
1. adjective
Having or showing the same structure or form throughout all parts of something.
“Many plants exhibit homonomous leaves, meaning that each leaf has the same shape and structure.”
2. noun
A word that has the same form for all its grammatical cases.
“The English word ‘bus’ is a homonomous noun because it remains the same regardless of its grammatical function.”