You need to spell the Latin letter of "Ono" before I can give an explanation, such as:

The French place name Auneau sounds like the word "Ono", which means "a small place with alder trees"

Auneau (French) →alnetellum (Latin prototype)

Alnetellum (Latin singular neutral nominative) →alnetum-lum

Alnetum (Latin singular neutral nominative case is based on Latin alnus)→ Alnus and other plants; Where there is alder.

Alnus (Latin singular masculine nominative case) → (red poplar)

-etum (Latin suffix noun singular neutral nominative used to form collective noun)

-ellum (Latin suffix noun singular neutral nominative gives the connected noun the attribute of "small")

-us (Latin inflected suffix singular masculine nominative)

-um (Latin inflected suffix singular neutral nominative)