It's a toss-up whether the plastic ghosts understands, cares, or can answer. It bobbles and glows with its plastic smile, but it doesn't make any noise and its hard to tell if the bobbing is the equivalent of a nod or a headshake or anything at all.

"As long as we don't call them Ghost or Spirit," Soldat offers. The former because that was one of their own "names" during their time with HYDRA, and the latter because, you know, confusing.