Gesch
Gesch is not a standalone noun or concept in German. It is primarily encountered as the initial segment of many past participle forms formed with the prefix ge- attached to verb stems, especially when the stem begins with the consonant cluster sch. In these cases the past participle commonly begins with the sequence gesch-, as in several common verbs.
Examples include geschrieben (from schreiben), geschoben (from schieben), geschlagen (from schlagen), geschrien (from schreien), geschichtet (from
Apart from its role in participles, gesch also appears as part of abbreviations in German-language writing.
In summary, gesch is best understood as a productive orthographic sequence in German, arising from the ge-