Ошибка при попытке очистить выделенную память

#include <stdio.h>
#include <string.h>
 
#define MAX_WORDS   10
#define MAX_LENGTH  20
 
int ReadWords(char *pWords[]);
void PrintWords(char *pWords[], int counter);
void SortWords(char *pWords[], int counter);
void FreeMemory(char *pWords[], int counter);
 
int main()
{
    char *pWords[MAX_WORDS] = {NULL};
    int wordsCounter;
 
    if ((wordsCounter = ReadWords(pWords)) == -1)
    {
        printf("Failed allocation memory\n");
        return -1;
    }
 
    printf("\nUnsorted list:\n");
    PrintWords(pWords, wordsCounter);
 
    SortWords(pWords, wordsCounter);
    printf("Sorted list:\n");
    PrintWords(pWords, wordsCounter);
 
    FreeMemory(pWords, wordsCounter);
    getch();
    return 0;
}
 
void SortWords(char *pWords[], int counter)
{
    int index;
    char *tempWord;
    char isSorted;
 
    isSorted = 0;
    while (isSorted == 0)
    {
        isSorted = 1;
        for (index = 0; index < (counter - 1); index++)
            if (strcmp(pWords[index], pWords[index + 1]) > 0)
            {
                isSorted = 0;
                tempWord = pWords[index + 1];
                pWords[index + 1] = pWords[index];
                pWords[index] = tempWord;
            }
    }
}
 
int ReadWords(char *pWords[])
{
    int charCounter;
    int index = 0;
    int ch;
    char *tempPointer = NULL;
    char word[MAX_LENGTH + 1];
 
    do
    {
        tempPointer = word;
        charCounter = 0;
        while (((ch = getchar()) != '\n') && (ch != EOF))
            if (charCounter++ < MAX_LENGTH)
                *tempPointer++ = ch;
        *tempPointer = '\0';
 
        if (charCounter > MAX_LENGTH)
            continue;
        else if (charCounter != 0)
        {
            tempPointer = NULL;
            tempPointer = (char *)malloc(strlen(word));
            if (tempPointer == NULL)
            {
                index = -1;
                break;
            }   
            strcpy(tempPointer, word);
            pWords[index++] = tempPointer;
        }
    } while ((charCounter != 0) && (index < MAX_WORDS));
 
    return index;
}
 
void PrintWords(char *pWords[], int counter)
{
    while (counter-- > 0)
        printf("%s\n", *pWords++);
    putchar('\n');
}
 
void FreeMemory(char *pWords[], int counter)
{
    while (counter-- > 0)
        free(pWords++);
}

while (counter-- > 0)
        free(pWords[counter]);

tempPointer = (char *) malloc(strlen(word)+1);