(education) research project, done by Japanese schoolchildren during summer break, to be presented upon return to school

lack, shortage / to be absent / vacancy

pulmonary tuberculosis

The hiragana syllable す (su). Its equivalent in katakana is ス (su). It is the thirteenth syllable in the gojūon order; its position is さ行う段 (sa-gyō u-dan, “row sa, section u”).

nest, hive, den

vinegar (condiment)

sandbank, sandbar

(archaic) to do / (archaic) to cause, become

(chiefly dialectal and colloquial) Alternative form of せる (seru, “causative suffix”)

The hiragana syllable しゃ (sha). Its equivalent in katakana is シャ (sha).