1: λύω
(Strong's #3089 — Verb — luo — loo'-o )

"to loose," is used of the future demolition of the elements or heavenly bodies, 2—Peter 3:10-12; in ver. 10, AV, "shall melt," RV, "shall be dissolved;" in verses 11,12, AV and RV, "dissolved." See BREAK.

2: καταλύω
(Strong's #2647 — Verb — kataluo — kat-al-oo'-o )

see DESTROY , A, No. 5.