replace doesn't search for the entire word before replacing

I have a code below that matches each individual word in the title in column A with words in sheet 2 column E and then replacing those words with the words in column F array. However I have encountered a difficultly, when there are similar words, the matching works by matching the shorter word instead of the full longer word. For example the array contains Small:SM and Smaller:SM however my title of A smaller cow will be replaced to A SMer cow. How do I get the code to match the entire word smaller instead of just small?




Please find attached a sample file with the code.