Hi , i have a very confusing question to ask for help.
i really don't understand what is the diferrent meaning of these 2 sentences? Can someone please explain to me what is the main difference of them???

1 Accept your children for who they are.
2 Accepting your children for who they are.
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1 Saying things like that.
2 Say things like that.

Clearly, my confusion is all about V and V+ing . so basically ,I want to know do they have the same meaning?
If yes, which means i can pick one of them whenever i want to?? or Do they have a difference between them???


Thanks in Advance for Your Help^___^