This is the 2913th most frequent French word.
expertise
Specialized knowledge or skill in a particular field.
In this sentence, 'expertise' is used to denote someone's specialized knowledge or skills in a particular domain.
Son expertise dans le domaine médical est remarquable.
His expertise in the medical field is remarkable.
Here, 'expertise' signifies the practical application of knowledge or skills in addressing a specific task or issue.
Nous avons fait appel à son expertise pour résoudre le problème.
We called upon his expertise to solve the problem.
In this case, 'expertise' refers to the acknowledged proficiency or competence of the group in a specific area of work or research.