sex / essential nature

(leftheart) + (life / birth) Same-ON
★★★★★
8 strokes
SUF

Onyomi

SEI, SHOU

SAY you'll SHOW me the sex!

Mnemonic

Sex is the part of life closest to the heart.

Jukugo

可能性(かのうせい) の or が

possibility ★★★★☆
(possible) + (talent) + (sex / essential nature) = 可能性 (possibility)

女性(じょせい)

female ★★★☆☆
(woman) + (sex / essential nature) = 女性 (female)

female - emphasizes biology, (sex, rather than gender).

男性(だんせい)

male ★★★☆☆
(man) + (sex / essential nature) = 男性 (male)

XXX (せい)

-ity ★★★☆☆ SUF

SUFFIX which turns an adjective into a noun: possible+性=possibility. creative+性=creativity. 男性 = man, but 男性性= masculinity.

性病(せいびょう)

STD ★☆☆☆☆
(sex / essential nature) + (sick kanji) = 性病 (STD)

what you got from your pops.

Synonyms

capability, talent
性能    才能    能力   
girl, woman, female
女性    女の人    嬢    乙女    女の子    女子   
guts
闘志    根性    意地   
personality
性格    性質    品性