固唾を呑む[katazuwonomu] to hold one's breath (in fear, anxiety, etc.)
唾き[tsubaki] saliva
唾液[daeki] saliva
眉唾物[mayutsubamono] fake
唾液腺[daekisen] salivary gland

生唾[namatsuba] saliva (in one's mouth)
唾棄[daki] contemptuous
虫唾[mushizu] heartburn
虫唾が走る[mushizugahashiru] to be disgusted with (wouldn't touch with a pair of tongs)
固唾[katazu] saliva held in one's mouth during times of tension

去痰[kyotan] expectoration
喀痰[kakutan] expectoration
血痰[kettan] bloody phlegm
痰壷[tantsubo] spittoon

検痰[kentan] sputum test
喀痰検査[kakutankensa] examination of somebody's sputum
去痰薬[kyotanyaku] expectorant
痰唾[tantsuba] sputum