Merge two array of objects not based on key

I want to marge two arrays not based on key

Array1

[
  { size: "45", color: "red" }, 
  { size: "48", color: "blue" }
]

Array2

[
  { designation: "short", price: "540" }, 
  { designation: "jeans", price: "600" }
]

I need to merge these two arrays and expected this array

[
  { size: "45", color: "red", designation: "short" }, 
  { size: "48", color: "blue", designation: "jeans" }
]

How can do it?