Function and form.
Form: Most verbs have five forms: 1. base form, 2. present third person, 3. past tense form, 4. present participle form, 5. past participle form,
• take (bare infinitive; base form)
Function: We have three verbals in the English language: 1. infinitive, 2. participle, 3. gerund.
• A gerund is a verbal that ends in -ing and functions as a noun.
• A participle is a verbal that is used as an adjective and most often ends in -ing or -ed.
• An infinitive is a verbal consisting of the word to plus a verb (in its simplest "stem" form) and functioning as a noun, adjective, or adverb.