find string pos from strings in an array

I am trying to find the string position of a string, and the string I am looking FOR is from an array of terms in another worksheet. I have it looking like this, but am getting a "type mismatch error" on this line...

termPos = InStr(Cell.Value, termsArray)

Here is my entire code. Any help will be appreciated.

Sub find_term_position()

Dim i As Long
Dim termsArray() 

Dim termsCount As Integer
Dim prodsCount As Integer
Dim termPos As Integer

Dim Cell As Range

Dim wsProds As Worksheet
Dim wsTerms As Worksheet

Set wsProds = Worksheets("products")
Set wsTerms = Worksheets("terms")

'number of terms
termsCount = wsTerms.Range("A1").End(xlDown).Row 

ReDim Preserve termsArray(wsTerms.Range("A1:A" & termsCount))

For i = LBound(termsArray) To UBound(termsArray)
    termsArray(i) = wsTerms.Range("A" & i + 1)
Next i

'number of products
prodCount = wsProds.Range("A1").End(xlDown).Row 

For Each Cell In wsProds.Range("A1:A" & prodCount)
    
       termPos = InStr(Cell.Value, termsArray)

        If termPos > 0 Then
        'string found
        Cell.Offset(0, 1).Value = "Term found at: " & termPos
    Else
        'string not found
        Cell.Offset(0, 1).Value = "Term not found"
   End If

Next Cell

End Sub