How to say gravity flow in different languages

You can say gravity flow as courant naturel in the following countries: Benin; Burkina Faso; Burundi; Central African Republic; Chad; Democratic Republic of the Congo; Djibouti; France; French Guiana; French Polynesia; French Southern Territories; Gabon; Guadeloupe; Guinea; Ivory Coast; Madagascar; Mali; Martinique; Mayotte; Monaco; Niger; Republic of the Congo; Reunion; Saint Barthelemy; Saint Martin; Saint Pierre and Miquelon; Senegal; Togo;

You can say gravity flow as spontaneität, selbstlauf, freier lauf in the following countries: Austria; Germany; Liechtenstein; Switzerland;

You can say gravity flow as itsestään in the following countries: Finland; Northern Mariana Islands;

You can say gravity flow as самацёк in the following countries: Belarus;

You can say gravity flow as samospád in the following countries: Czechia;

You can say gravity flow as żywioł in the following countries: Poland;

You can say gravity flow as самотек in the following countries: Russia;

You can say gravity flow as самоплив in the following countries: Ukraine;