- (Women's) clothing and cosmetics (peplum, bandeau, kohl, espadrille, whipstitch)
- Hair style (chignon)
- Fabrics and weaving (ruche, bouclé, chenille, voile, sateen, jacquard, damask, chambray)
- Women's health (pessary, doula)
- Flowers (Freesia, Verbena)
Interestingly, half of these words aren't even in Firefox's dictionary it seems. Even with "English (United States, large)" some words are underlined with red squiggles.
Most excessively male-recognised words seem to come from technical fields or science, or Japanese culture, weirdly enough. The only explanation I can give for most men seemingly knowing "shemale" is porn.
My conclusion for this data: men tend to know fewer words relating to clothes and aesthetics, women tend to know fewer words relating to science and Japanese culture. As the recognition for "female" words is much lower than that of the "male" words, I'd say that this is because of a lack of men with knowledge about clothes.
Discoverable, Rebecca, amongst, captcha, jokester - just to give a few examples of normal words that Firefox doesn’t know.
Maybe "femtosecond" was used by Danish scientists in the 1800's or something, but it's definitely not a word that was common in another language and then imported into English.
Worth noting that by the percentages here fewer than 50% of males surveyed were familiar with it.Such dataset could be used as a gender captcha.