HonKo
Hon-ko is a Japanese go term for a ko that can be resolved in one move after ignoring the enemy's ko threat, in contrast to special types of ko such as approach ko, dan ko, or double ko. It's often translated into English as "direct ko", although "real ko", which is what the Japanese literally means, might be better.
There's usually no special reason to call a ko situation a hon-ko instead of just a ko, unless the distinction is important. For instance, the final approach move in an approach ko could be described as making a situation into a hon-ko.