it seems that this figure can be used to elaborates the perceptron model and SVM model:
Is it appropriate and clear to call this figure "two-feature classification"? Is this a canonical name?
It is a 2 feature classification model. The 2 features are x1 and x2. Essentially we are using these 2 features to draw a boundary on the data.
The nomenclature I always find on academic books and papers is binary classification.