This is the 675th most frequent Finnish word.
seurassa
"In company" or "in the company (of others)."
Here, 'seurassa' denotes being in the company or presence of someone.
Vietin iltaa ystävieni seurassa.
I spent the evening in the company of my friends.
In this sentence, 'seurassa' emphasizes enjoying the environment created by good company.
Hän viihtyy aina hyvän seuran seurassa.
He always enjoys being in the company of good companions.
Here, 'seurassa' shows companionship, specifically the presence of the dog accompanying the individual.