"contrasting" in the verb sense
1. contrast
put in opposition to show or emphasize differences
"The middle school teacher contrasted her best student's work with that of her weakest student"
2. contrast, counterpoint
to show differences when compared be different
"the students contrast considerably in their artistic abilities"
"contrasting" in the adjective sense
1. contrasting, contrastive
strikingly different tending to contrast
"contrasting (or contrastive) colors"
Source: WordNet® (An amazing lexical database of English)
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