This is the 16750th most frequent Russian word.
следа
"Следа" in Russian typically refers to "trace" or "trail" in English.
In this sentence, 'следа' refers to a trace, specifically the imprint or evidence of an action, such as steps.
На снегу не осталось следа от чьих-либо шагов.
There was no trace of anyone's steps left on the snow.
Here, 'следов' is a form of 'следа' used to denote any marks or signs left behind, thus 'следа' implicates evidential remnants.
После его ухода не было найдено никаких следов.
No traces were found after he left.
In this context, 'след' represents a metaphorical mark or influence something leaves on an individual.