Refers to saliva that is currently inside the mouth, often used in contexts of swallowing or when describing a dry mouth.
I was so nervous I swallowed my saliva.
My throat is so dry I can't produce any saliva.
Standard kanji spelling.
Mixed kanji-kana spelling, common in everyday writing.
Compound of 生 (nama, 'raw, fresh') and 唾 (tsuba, 'saliva'). The prefix 生 emphasizes that the saliva is fresh or still in the mouth.