Gerund vs. infinitive

[Sonia*]

Good evening teachers.
Hope you all are fine.

Please tell me the difference between "gerund and infinitive". Does the use of these two really make any difference in the meaning of a sentence if we use it alternativly?

please define it fully.I would really appreciate your input. Thanks a million in
advance.

sonia* :)

[Alan]

Hi Sonia,

You might start by looking at a piece I've written for the site: Gerund or infinitive?

Alan
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English as a Second Language
You can read my ESL story Present Simple