I think most folks consider "manscaping" to be the hair modifications that get done south of equator, but could also include stuff like chest hair and back hair.
I think that most anything one does to one's head is called "grooming".
As far as manscaping goes - when I am riding bike, I hate it when my MTB shorts grab hair and yank it out when I'm trying to move around on the saddle. The only cure for that is getting rid of the hair. So, during MTB season around here, I do southern hemisphere grooming. The rest of the year, no.
I don't pluck eyebrows, and I don't have ear hair (yet). I trim nose hair, and rarely let the hair on my head get longer than 2". No facial hair, either (at spousal request). All other hair not mentioned is left to do what it wants.
