HackerVoca

siege : blockade, besieging
sign : token1 /noun [countable]

1 a round piece of metal that you use instead of money in some machines

2 formal something that represents a feeling, fact, event etc : a token of your gratitude/respect/appreciation etc: Please accept this gift as a small token of our appreciation.

also by the same token same1 (8)

3 book/record/gift token BrE a special piece of paper that you can exchange for a book, record etc in a shop; gift 쟠ertificate AmE : a ?0 book token, indication, trace, hint, suggestion

significant : important, consequential, momentous, critical, crucial, vital
signify : express, indicate, mean
silent : speechless, dumb, mute, tacit
simultaneous : concurrent, concomitant1 / adjective formal
existing or happening together, especially as a result of something: war with all its concomitant sufferings.
concomitantly adverb , synchronous