I have been thinking about a title for a post on another website that I'd made all day. At first, I had worded it like, "Reasons That [character one's name here] and [character two's name here] Are Similar", but I started thinking about it, and I thought that maybe "Reasons How" would be best here?

I'm not sure... Can someone help me and explain to me which one is grammatically correct?

  • 2
    After reasons, it's why. Sep 12, 2015 at 23:51
  • 3
    You don't need either ---> 'Reasons John and Mary Are Similar' Sep 13, 2015 at 0:09
  • I like "Why John and Mary Are Similar"
    – James
    Sep 13, 2015 at 2:31

2 Answers 2


The correct version would be to use "that." "How" is an adverb, as opposed to the relative clause "that" serves in your title. You could switch "why" in for "that." Leaving a clause out entirely is also an option, to just have "Reasons [Bilbo] and [Frodo] Are Similar," for example.

  • Thank you! It's been bugging me since yesterday because neither one seemed to sit well with me after I'd thought, "Well, maybe it's 'How'..."
    – Samantha
    Sep 13, 2015 at 12:37

Usually, the question - Why explains reason. So, it should be:

Reasons why A and B are similar

As it is a title for your post, you don't need to use a clause as @chasly from UK has mentioned

Reasons A and B are similar

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