What are soft skills?

Some examples of hard skills: mastery of a foreign language, computer software, programming languages, etc.Soft skills are human qualities linked to the candidate's personality. In other words, it is a question of their interpersonal skills...

Some examples of soft skills: demonstrating emotional or behavioural intelligence, empathy, listening skills, leadershipskills...  

https://intuition-software.com/hard-skills-vs-soft-skills/

Soft skills refer to behavioural competences, most often acquired outside the school or university sphere...

For example: complex decision making, emotional intelligence, conflict resolution, stress management, boldness, motivation, teamwork skills...

https://www.journaldunet.fr/management/guide-du-management/1445708-soft-skills-definition-liste-et-traduction/

Soft skills, a term that refers to relational intelligence, communication skills, character and interpersonal skills. In short, all these abilities are complementary to those that can be learned and measured, which are called "hard skills " by contrast.

https://www.cadremploi.fr/editorial/conseils/conseils-candidature/entretien-embauche/detail/article/soft-skills-quelles-sont-celles-que-les-entreprises-s-arrachent.html