Mdthbs

I was looking through a feature in some Romance languages, Spanish and French, where nouns in Spanish change depending on gender. I was wondering if Latin had a few of these.
Here are examples in Spanish and in French.

Particular examples are

• el consonante: rhyme, la consonante: the consonant (Spanish)




• le bal: dance, la balle: ball (French)

Nothing contrived such as canis, canis, m/f meaning one is a male dog and the other is female.

Nemo, neminis, m/f and dies, diei, m/f are nouns of ambiguous gender which is a different situation.

The masculine noun flamen denotes a type of priest. The neuter noun flamen means 'a blast, gust (of wind)' or 'an exhalation, breath.'

Also, generally, the words for various fruit trees and the fruits that they produce differ only in gender. Examples include cerasus (f.), 'cherry tree,' vs. cerasum (n.), 'cherry'; malus (f.), 'apple tree,' vs. malum (n.), 'apple'*; prunus (f.), 'plum tree,' vs. prunum, 'plum'; and cornus (f.), 'cornelian cherry tree,' vs. cornum (n), 'cornelian cherry.'**

* As a masculine noun, malus can also mean 'pole' or 'mast.' I'm excluding forms of the adjective malus from this discussion because the a is short in that word but long in these three.

** There's also the neuter noun cornu, 'knee,' which may overlap in some forms with cornus and cornum.

In fact, dies does have a slightly different meaning in the two genders.
The masculine is the more general meaning, but for specific meanings like an appointed special day or day as a deity you need the feminine.
This division probably has to do with the word being originally masculine but being leveled to feminine gender to conform with the rest of the fifth declension.

Another common example is the plural of locus.
The masculine plural loci refers to individual places, whereas loca refers to connected places.
This has to do with the collective meaning of the neuter plural.
The two plurals look a little different, but this is similar to the French example you mention.

For more details, check the related questions on dies and loci/loca.

For an example related to canis, consider lupus and lupa.
While they primarily mean "he-wolf" and "she-wolf", the feminine version has the additional meaning of a prostitute but the masculine one does not.

For yet another example, there are the nouns gallus (a rooster) and galla (a nut or bad wine) in addition to the adjective gallus (Gallic).

If I got it right, you are asking if there are homophones in Latin. Unsurprisingly, as (I suppose) in any language, there are plenty of them!

For example, you can find a non-exhaustive list on the Wiktionary.