Open English Wordnet
Nouns
(n)introduction, debut, first appearance, launching, unveiling, entrythe act of beginning something new“they looked forward to the debut of their new product line”
(n)submission, entrysomething (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)“several of his submissions were rejected by publishers”, “what was the date of submission of your proposal?”