The Lexham Bible Dictionary
“Ark of the Covenant (בְּרִית־הַאֲרוֹן, berith-ha’aron). A golden chest that contains the covenant tablets. It served both a practical and a symbolic purpose, and was instrumental in both rituals and miracles. The Israelites believed the ark of the covenant was symbolically Yahweh’s throne—representing His very presence on earth.
The Hebrew word for “ark” (ארון, ‘rwn) designates a chest or coffin. However, the Bible makes a clear designation between the ark of the covenant and a common chest. While the most common name for the ark is “ark of the covenant,” it is also referred to as “the ark of God,” “the ark of might,” “the holy ark,” and “the ark of testimony” (or simply “the testimony”).”
http://ref.ly/o/lbd/632218 via the Faithlife Study Bible Android app.