If you intend to look for something which does the spell check then you have to open MS word. I do not see any difference in the way of opening MS Word or Notepad. The clicks are going to be same. One best suggestion I can give you is to pin MS word in your taskbar so that in a single click you can open it and start typing. There is also another tool which is called "Notepad++" which is an upgraded version of Notepad. You can add plugins in Notepad++ to do spell check but I would rather suggest using MS word if you really want to do the spell check.
I have come across with another very important tool or as a mechanism in which we can do some coding with it. For example, there is an ERP software, referred to as SAP. This is made of Script tool which facilitates us to download the transaction & can be molded through NotePad in such a way that after few changes, we can repeat the same transaction as many times as possible. I know that I haven't been able to clarify this aspect as this concern to one technical aspect.
So this way, the Note Pad got its own importance, that & although we having Microsoft Word as a essential package but still carries this one.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease