With respect to grammatical gender, there are three kinds of languages: gendered (e.g., Spanish, Arabic), where virtually all nouns are designated masculine, feminine, or, in some cases, neuter; genderless (e.g., Chinese, Turkish), with no grammatical or lexical distinction between male and female; or “natural gender” (e.g., English, Swedish), where only people and animals who possess a biological gender get gendered nouns and pronouns. Do speakers of gendered and genderless languages tend to see the world differently? Do their countries differ in gender (in)equality? Nayantara Dutta looks at some research. – BBC