Expérience, dextérité. Dans cette branche, il a du savoir-faire.
The (technical) knowledge and skill required to do something. know how
(French) “to know how to do”; knowledge of correct action; tact; adroitness. savoir vivre, “to know how to live”; good behavior or breeding.
Social skill; SYN. address.
Knowing what to do, how to behave.