cours
class
lesson
course (educational)
Je ne peux pas venir, j'ai cours de maths à 14h.
I can't come, I have math class at 2 p.m.
flow
course (of a river)
course/progress (of events)
Le cours de la rivière a été modifié par les travaux.
The course of the river was altered by the works.
market price
quotation (e.g. stock price, exchange rate)
Le cours de l'action a fortement augmenté aujourd'hui.
The stock price rose sharply today.
run
be in a hurry
Pourquoi tu cours comme ça ?
Why are you running/hurried like that?
Notes
GENERAL INFO
Cours is a masculine noun meaning 'class', 'lesson' (academic), 'flow' (of water/river), or 'price' (e.g., market price). It is also the present tense conjugation of the verb 'courir' (to run).
USAGE
As a noun: "J'ai un cours de maths." (I have a math class). "Le cours de la rivière." (The flow of the river).
As a verb: "Tu cours vite." (You run fast).
TRAPS
The main trap is confusing the masculine noun un cours (class, flow) with the verb courir. Context and preceding words (like articles or pronouns) are crucial for distinguishing them.
CONJUGATION - 3rd Group
Je cours
Tu cours
Il/elle/on court
Nous courons
Vous courez
Ils/elles courent
