This is the 6162nd most frequent Arabic word.
يسود
"يسود" means "to prevail" or "to dominate."
In this sentence, 'يسود' is used in its abstract sense to indicate the dominance or prevalence of peace over the world.
يَسودُ السّلامُ العالمَ عندما يَتّحدُ الجميعُ.
Peace prevails across the world when everyone unites.
Here, 'يسود' refers to the governing or prevailing influence of the rule of law in societies.
يسودُ حُكمُ القانونِ في المجتمعاتِ العادلةِ.
The rule of law dominates in just societies.
In this context, 'يسود' denotes the physical covering or prevalence of the black paint over the car's surface.