The rest of google states "especially when considered with reference to social and cultural differences rather than biological ones, or one of a range of other identities that do not correspond to established ideas of male and female."
Gender especially refers to "social and cultural differences rather than biological ones",
or in other words, the gender categories of male and female in a social understanding, soccer versus nail polish.
In contrast, sex refers to the biological understanding, pp versus vjj.
The rest of google states "especially when considered with reference to social and cultural differences rather than biological ones, or one of a range of other identities that do not correspond to established ideas of male and female."
Gender especially refers to "social and cultural differences rather than biological ones",
or in other words, the gender categories of male and female in a social understanding, soccer versus nail polish.
In contrast, sex refers to the biological understanding, pp versus vjj.