In linguistics, “gerund” is a term used to refer to various non-finite verb forms in various languages:
As applied to English, it refers to what might be called a verb's action noun, which is one of the uses of the -ing form. This is also the term's use as applied to Latin; see Latin conjugation.
As applied to Spanish, it refers to an adverbial participle (a verbal adverb), called in Spanish the gerundio. The term gerundive is also applied to this.
As applied to French, it refers either the adverbial participle — also called the gerundive — or to the present adjectival participle.
As applied to Hebrew, it refers either to the verb's action noun, or to the part of the infinitive that follows the infinitival prefix (also called the infinitival construct).
As applied to Frisian, it refers to one of two verb forms frequentely referred to as infinitives, this one ending in -n. It shows up in nominalizations and is selected by perception verbs.
As applied to other languages, it may refer to almost any non-finite verb form; however, it most often refers to an action noun, by analogy with its use as applied to English or Latin.
Gerunds in English
In English the gerund is identical in form to the present participle (ending in -ing) and can behave as a verb within a clause (so that it may be modified by an adverb or have an object), but the clause as a whole (sometimes consisting only of one word, the gerund) acts as a noun within the larger sentence. For example:
Editing this article is very easy.
Within the clause "Editing this article", the word "Editing" behaves as a verb; the phrase "this article" is the object of that verb. But the whole clause "Editing this article" acts as a noun within the sentence as a whole; it is the subject of the verb "is".
Other examples of the gerund:
I like swimming. (direct object)
Swimming is fun. (subject)
Verb patterns with the gerund
Verbs that are normally followed by a gerund include admit, adore, anticipate, appreciate, avoid, carry on, consider, contemplate, delay, deny, describe, detest, dislike, enjoy, escape, fancy, feel, finish, give up, hear, imagine, include, justify, keep (on), listen to, mention, mind, miss, notice, observe, perceive, postpone, practice, quit, recall, report, resent, resume, risk, see, sense, stop, suggest, tolerate and watch.
Additionally, the prepositions "into" and "out of" can be followed by a gerund.
For example:
We postponed making any decision.
I simply adore reading what you write.
I detest going to the cinema.
We heard whispering.
His physician advised leaving home for a week.
They denied having avoided me. (= They denied that they had avoided me.)
He talked me into coming to the party.
They frightened her out of voicing her opinion.
Verbs followed by a gerund or a to-infinitive
With little change in meaning
begin, continue, start; hate, like, love, prefer
With would, the verbs hate, like, love, and prefer are usually followed by the to-infinitive.
For example:
I hate to work. or I hate working.
I love to sleep. or I love sleeping.
I would like to work there. (more usual than working)
In these examples, if the subject of the verb is not the subject of the second verb, the second verb must be a gerund (instead of an infinitive)
If I am watching sports on television, for example, I can react to the programs only as follows:
I hate boxing.
I love swimming.