Laufen vs. rennen
The German language often has multiple words with similar meanings, yet different nuances. Laufen and Rennen are two such words, both translating into English as to run. However, they are used in different contexts.
Laufen
A1Laufen, typically means to walk, but can also mean to run in a more general sense. It is usually used to describe regular, less vigorous movement.
Ich laufe jeden Tag zur Schule.
(I walk to school every day.)
Er läuft jeden Morgen 5 Kilometer.
(He runs 5 kilometers every morning.)
Das Wasser läuft aus dem Hahn.
(The water is running from the faucet.)
Rennen
A2Rennen specifically means to run, usually at a faster pace or in a competitive or urgent context. It is more intensive than laufen.
Die Kinder rennen auf dem Spielplatz.
(The children are running around the playground.)
Er rennt um sein Leben.
(He is running for his life.)
Sie rennt immer zur Arbeit, weil sie spät dran ist.
(She always runs to work because she's late.)
Summary
Laufen and rennen both translate to to run in English, but are used differently. While laufen can refer to both walking and running generally, rennen refers specifically to running, often in a fast or urgent manner.