This is not the right place to ask this question, but I am not sure where to go. I understand what a lemma and the root of a Greek word is, but how does one distinguish between the lemma and the root when they are the same word. I am beginning a study of Mark 1 and examing the word "gospel". When I click on the word "gospel", I see that the lemma and the root are the same word in the Greek:

When I do a search in the Greek text (NA28), I find more hits for the root than I do the lemma. In general, this makes sense, if the lemma. But if the lemma and the root are the same word, why do I get more hits for the root than for the lemma?
Also, where should this kind of question be asked?