Excel work...find parentheses and text then delete

Attached is an excel document with 2 columns. Within each row, there are words in column A which are sometimes repeated in Column B, (of their respective row only). We want to duplicate those from B into a new column, but without those terms from Column A. So, in other words, find a row, use the exact phrase in column A, if found in column B, then to copy all the terms in column B except those terms from A into another column. Please do not delete any of the content. Only add a new column. Please respond "Dear Ben" indicating you read the entire project. Thanks, Ben