1. (technical skill or fluency or style exhibited by a virtuoso)
virtuosity
synonim: wirtuozerstwo
synonim: wirtuozostwo
synonim: wirtuozeria
synonim: maestria
synonim: kunszt
synonim: perfekcja
synonim: mistrzostwo

2. (the skilled practice of a practical occupation
"he learned his trade as an apprentice")
trade, craft: : synonim: rzemiosło
synonim: rzemieślnictwo