Hello- I am trying to count the number of negative and positive words within each "Comment" observation. Variables: Comment: A list of a website comments   Negative: A list of negative associated words, each observation is one negative word   Positive: A list of positive associated words, each observation is one positive word     I have gathered the information and combined them into one data set, now I am confused how to scan/index each comment observation when I'm looking to see if it contains any word in an entire list and eventually count them to something like this: Does anyone have any insight? Comment         Negative    Positive     Rating "Wow so great"                                        2 "It's OK"                                                  1 "Good but boring"                                     0 "Meh"                                                     -1                                                   Bad                          Meh                          boring                                                                                 Wow                                         Great                                         OK                                         Good ... View more