Was the name Friday/Jumua known before Islam?

Based on this Question and as we know that all weekdays in Arabic are associated with a number: - Sunday =al-Ahad - 1 الأحد - Monday =al-Ithnayn - 2 الاثنين - Tuesday = a-Thulata' - 3 الثلاثاء - Wednesday = al-Arbi'a' - 4 الأربعاء - Thursday = al-Khamys - 5 الخميس - Friday = al-Jumu'a الجمعة - Saturday = a-Sabt - 6 السبت The names of both Friday and Saturday have been quoted in the Quran! So it it seems that these names have been known, at least to some people! My point is did the weekdays have other names before Islam, and if the Friday already was known as Jumu'a, what was the meaning or reason of such a nomenclature before Islam (in Jahiliya)?