Welcome to the forum, Nikkie.
Please avoid forms such as 'coz'. We try to use standard English in this forum; the word is 'because'.
Labels such as 'gradable' and 'strong' may be helpful at times, but they are only labels. A thing can be very frustrating, and one thing can be more frustrating than another. That being so, if you need labels, frustrating is not 'strong', but it is 'gradable'.
Student or Learner