夏季休暇[kakikyuuka] summer vacation
季刊[kikan] quarterly (e.g. magazine)
季語[kigo] seasonal word (in haiku)
季候[kikou] season
季節[kisetsu] season

季節はずれ[kisetsuhazure] unseasonable
季節的[kisetsuteki] seasonal
季節風[kisetsufuu] seasonal winds
四季[shiki] four seasons
冬季[touki] (season of) winter

リーダーシップ的地位[riidaashipputekichii] leadership position
圧制的[asseiteki] oppressive
圧倒的[attouteki] overwhelming
圧倒的多数[attoutekitasuu] overwhelming numbers
意図的[itoteki] intentional

一義的[ichigiteki] unequivocable
一元的[ichigenteki] monistic
一時的[ichijiteki] temporary
一般的[ippanteki] popular
一般的なルールとして[ippantekinaruurutoshite] as a general rule

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