Is An Airbus A350 Bigger Than A Boeing 777?

Is the Airbus A350 bigger than the Boeing 777X? Short answer, no. Longer answer, the popular Boeing 777-9 is comprehensively larger than the Airbus A350 family and is set to be the largest twin-engine commercial aircraft in the skies. Having said that, these aircraft each come in two passenger variants, and could the largest A350 variant (the A350-1000) be larger than the smallest Boeing 777X variant (the 777-8)? Are there any categories where the A350 has the edge over the Boeing 777X?