藁苞[warazuto] straw wrapper
苞苴[aramaki] salted salmon
苞葉[houyou] bract (leaf)
総苞[souhou] involucre

苞苴[housho] straw-wrapped item
山苞[yamazuto] souvenir from the mountains
藁苞[warasubo] Odontamblyopus lacepedii (species of eel goby)

逸速く[ichihayaku] promptly
音速[onsoku] speed of sound
加速[kasoku] acceleration
加速運動[kasokuundou] accelerated motion
加速度[kasokudo] acceleration

快速[kaisoku] high speed
快速電車[kaisokudensha] high-speed train
角速度[kakusokudo] angular velocity
急速[kyuusoku] rapid (e.g. progress)
減速[gensoku] deceleration