if someone refers to "BB" in a NL context, do you assume they are talking about Big Blind, or Big Bet (aka ptBB, or 2xbigblind)?

does it matter in what context used? i.e. if someone says "we are playing with 150BB effective stacks" or "my winrate in August is 3BB/100"?

what's the best way to avoid confusion, short of writing the full word out?