A gerund
A verb used as a noun.
Go -> going
Werkwoord + ing
To like, to love, to miss, to avoid, to hate
"I hate going to the dentist."
"I like eating cookies."
A to- infinitive
to + hele werkwoord
to want, to promise, to expect, to decide, to plan, to hope, to ask, to refuse
"I refuse to work in these conditions."
"He told me to ask for a refund."