A gerund is a verbal that ends in -ing and
functions as a noun.
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A participial is a group of words consisting
of a participle and the modifier(s) and/or (pro)noun(s) or noun
phrase(s) that function as the direct object(s), indirect object(s), or
complement(s) of the action or state expressed in the participle.
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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.
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