1: μεγαλειότης
(Strong's #3168 — Noun Feminine — megaleiotes — meg-al-i-ot'-ace )

see MAGNIFICENCE.

2: μεγαλωσύνη
(Strong's #3172 — Noun Feminine — megalosune — meg-al-o-soo'-nay )

from megas, "great," denotes "greatness, majesty;" it is used of God the Father, signifying His greatness and dignity, in Hebrews 1:3 , "the Majesty (on high)," and Hebrews 8:1 , "the Majesty (in the Heavens);" and in an ascription of praise acknowledging the attributes of God in Jude 1:25 .