The study analysing the language of 65,000 Facebook users also found, for the first time, that males and females used equally assertive language.
The words that women used on Facebook included wonderful, happy, birthday, daughter, baby, excited and thankful. Some of the words most commonly cited by men included freedom, liberty, win, lose, battle and enemy.
Researchers tackled the question of how men and women express themselves differently on social media.
Computational analyses were used to automatically identify differences in the types of words used by women and men.
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"We found that women mentioned friends, family and social life more often, whereas men swore more, used angrier and argumentative language and discussed objects more than people," she said.
"Our results demonstrate that gender is a complex, multi-faceted and fluid concept, but this study shows that self-reported gender does influence the way people express themselves on Facebook," Kern said.
The topics were also rated for how affiliative (socially connective) and assertive they were. Like other studies, women used more affiliative language than men.
Dr Andrew Schwartz from Stony Brook University in the US said that looking at language in social media offers a fresh perspective on understanding gender differences.
"Here we were able to use a novel technique to explore psychological dimensions. While some previous work suggests men are more assertive, the language in Facebook didn't reflect this," he said.
The study was published in the journal PLOS One.