葵祭[aoimatsuri] hollyhock festival
慰霊祭[ireisai] memorial service
学園祭[gakuensai] school festival
学祭[gakusai] school festival
冠婚葬祭[kankonsousai] important ceremonial occasions in family relationships

祇園祭[gionmatsuri] Gion Festival (in Kyoto during the month of July, with high point on the 17th)
供祭[gusai] offerings
血祭り[chimatsuri] bloodbath
元始祭[genshisai] Festival of Origins (January 3)
五十年祭[gojuunensai] jubilee

おけさ節[okesabushi] style of Japanese folk song associated with Niigata Prefecture
双節棍[nunchaku] nunchaku (two linked fighting sticks)
一音節[ichionsetsu] monosyllable
一節切り[hitoyogiri] one-jointed bamboo musical instrument
音節[onsetsu] syllable

鰹節[katsubushi] katsuobushi
環節[kansetsu] segment (of worm)
関節[kansetsu] joints (knee joint, elbow joint, etc.)
関節リューマチ[kansetsuryuumachi] rheumatoid arthritis
関節炎[kansetsuen] arthritis