What's the difference between peakish and peckish?

Peakish

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Definition:

• (a.) Of or relating to a peak; or to peaks; belonging to a mountainous region.
• (a.) Having peaks; peaked.
• (a.) Having features thin or sharp, as from sickness; hence, sickly.

Example Sentences:

Peckish

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Definition:

• (a.) Inclined to eat; hungry.

Example Sentences:

• (1) Feeling peckish, I ride to the lake’s official and slightly gaudy Strandbad, which is free to get in and has several snack stalls.
• (2) Richard Hurst (@richardhursty) I ate three of Howard's hash cakes and still felt peckish.
• (3) The fivers have also had to pass health and safety tests, just in case they should fall into the paws of peckish toddlers and pets.
• (4) If you get peckish afterwards, go through to the Thai restaurant.
• (5) But I like the more day-to-day overstatement – like saying you're starving when really you're just peckish.