Pentecost 1207 - deuteroprotos {dyoo-ter-op'-ro-tos}; from 1208 and 4413; second-first, i.e. (specially) a designation of the Sabbath immediately after the Paschal week (being the second after Passover day, and the first of the seven Sabbaths intervening before {Pentecost}): -- second...after the first.
Pentecost 4005 - pentekoste {pen-tay-kos-tay'}; feminine of the ord. of 4004; fiftieth (2250 being implied) from Passover, i.e. the festival of " {Pentecost} " : -- Pentecost.