When it comes to describing a direct collision between two objects, there are many synonyms for the term "head ons" that can be used. Some of the most common options include "face-to-face," "frontal impact," and "full-frontal collision." Other possibilities might include "straight on," "nose-to-nose," or "head-to-head." Regardless of the terminology used, these types of collisions are often associated with serious damage and injury, since both objects are moving in opposite directions and strike each other with significant force. As such, it is essential to exercise caution and follow safety guidelines when driving or operating machinery.