This is the 1205th most frequent Russian word.
знак
"Sign," "mark," or "symbol."
The word 'знак' refers to an information board or visual sign present on roads, for example, a construction warning sign.
На дороге установлен знак, который сообщает о ремонтных работах.
There is a sign on the road indicating construction work.
The word 'знак' is used metaphorically here to signify a symbolic representation or gesture of appreciation.
Этот подарок я воспринимаю как знак вашей признательности.
I perceive this gift as a token of your appreciation.
The word 'знак' again refers to a traffic sign, specifically the stop sign near a road intersection.