I am currently working on -ing nominalizations and I've noticed that some grammar books refer to verbal nouns as deverbal nouns. Do you (English native speakers) make the difference or do you consider these two types of nouns as being the same ? The only thing I'm sure of is that both verbal nouns and deverbal nouns derive from verbs. I just want to be sure that these two concepts exist in English and that a difference exists. Thank you, because I'm starting losing my mind!!