faulty parallelism
Items in a pair or a list that do not match in form.
Matched ideas take matched forms. A noun with a noun: the notes and the files. An infinitive with an infinitive: to file and to wait. A gerund with a gerund: filing and waiting. Do not mix those forms in one pair or one list. See also correlative conjunctions and parallelism.
Examples
Useto sort, to label, and to store
Avoidto sort, labeling, and storage