what's the difference between a proclamation and a declaration
Proclamation A proclamation (Lat. proclamare, to make public by announcement) is an official declaration issued by a person of authority to make certain announcements known. Proclamations are currently used within the governing framework of some nations and are usually issued in the name of the head of state.
Emancipation Proclamation The Proclamation applied in the ten states that were still in rebellion in 1863, and thus did not cover the nearly 500,000 slaves in the slave-holding border states (Missouri, Kentucky, Maryland or Delaware) which were Union states. Those slaves were freed by later separate state and federal actions.