KGT 157f.: The word [paw'] literally means "collide" and is usually (though hardly exclusively) heard when referring to vehicles. In both its literal and slang usages, paw' takes a plural subject ... paw' lupDujHommey ("The shuttlecraft collide"). To refer to a something in motion colliding with something stationary, a different verb, ngeQ ("bump into, collide with") is used, as in raS ngeQ tera'ngan ("The Terran bumps into the table"). When the subject of paw' is persons, the most common interpretation of the verb is the slang one-that is, butt heads. ... When the subject of paw' is anything other than persons, the most likely interpretation is the non-slang one, collide. If one wanted to say that two persons collide but not imply that they butt heads, the verb ngeQ would probably be used along with the suffix -chuq (each other) as in "ngeQchuq tera'nganpu'} ("The Terrans collide with each other").