This is the 362nd most frequent Hindi word.
सह
The Hindi word "सह" means "with" or "together with" in English.
In this sentence, 'सहपाठी' is a compound word where 'सह' means 'co-' or 'together', indicating the relationship of being classmates.
मैंने अपनी सहपाठी के साथ काम किया।
I worked with my classmate.
Here, 'सहयोग' means 'cooperation', with 'सह' indicating collaboration or assistance.
सहयोग से ही प्रगति होती है।
Progress is achieved only through cooperation.
In this example, 'सहलोकप्रियता' uses 'सह' to mean 'co-' combined with 'popularity' to indicate shared or mutual popularity.