This is the 3742nd most frequent Russian word.
форма
"Form" or "shape"; can also mean "uniform" depending on context.
The word 'форма' refers to clothing ensembles designed for sports.
На уроке физкультуры ученики должны быть в спортивной форме.
In physical education class, students must be in sports uniforms.
Here, 'форма' means a school-specific uniform worn by students.
Школьная форма способствовала созданию дисциплины среди учащихся.
School uniforms promoted discipline among students.
In this context, 'форма' refers to the physical shape or design of an object.