Is silas's door in silas marner a symbol? yes or no

Yes, Silas's door, Eppie, and Dunstan's pit were three key symbols in Silas Marner. 

Silas's door represents his openness to the people around him and to his spiritual condition

Transition words are words like first, furthermore, besides, for instance, secondly, as a result using words like those should you write paragraphs showing time. you can start with first and then end with lastly or as a result