Explanation

"Chairman" is masculine gender.

"Chairperson" is feminine gender.

Explanation

The word "cleaner" is a common gender noun.

As it can refer to both males and females performing the job of cleaning.

It is not specific to any gender.

Explanation

The word "girl" refers to a female child or young woman.

This making it a feminine gender noun.

It specifically denotes female identity.

Explanation

"Postman" traditionally refers to a male postal worker, thus it is considered a masculine gender noun. 

For gender neutrality, the term "postal worker" or "mail carrier" is also used.

Explanation

A male cat, when it is not neutered, is referred to as a Tom.

This term specifically designates an unneutered male cat, distinguishing it from neutered males and females.

Explanation

Nephew means بھتیجا

Niece means بھتیجی

Explanation

Ox/Bull means بیل

Cow means گائے

Explanation

Tomcat means بِلّا

Cat means بِلّی

Explanation

Ram means دنبہ

Lamb means میمنا

Explanation

Fox means لومڑ

Vixen means لومڑی