The difference between Chords and Strokes in Steno.
Both strokes and chords are sets of keys. They share identical structure.
When using sets of keys generically, the term stroke is used. All chords are strokes.
The term stroke encompasses all sets of keys. Thus, all chords are strokes.
Chords can be combined to form strokes. For example, the chord TPH- and the chord OE can be combined to form the stroke TPHOE (mapping to “no”).
Strokes are generally not combined to form new strokes. Strokes exist independently. Strokes are composed to form outlines. Composing the stroke KUP and KA*EUBG gives you KUP/KA*EUBG (mapping to “cupcake”).