Peek, peak, and pique;  sound the same but meaning varies very much! 

'Peak' 'Peek' 'Pique'

These 3 are rarely listed alphabetically but it helps one whose memory cap is already full and exacerbated by amyloid plaque in the rain. Today it helped me add new POPs to my list----Pinnacle Of Prayer and Peak of Power.

Peak is a noun or adjective that refers to a maximum or high point, as in the peak of a mountain right outside our great room window....

..or a peak performance! Think a second-grader dancing in the rain.

Peek is sight related and often refers to looking quickly. Growing up, our kids would peek over the stair case bannister on Christmas Eve and then run back upstairs to avoid getting "caught"! 

Lastly, a third homophone pique, means "to excite or arouse" and is usually used with "curiosity." For me, (today) my curiosity is piqued by homophones!

Take a peek! It'll be the peak of your day! 

Have I piqued your interest yet?