a male worker, particularly in manual or physical labor.

a skilled worker, often in a trade or craft.

श्रमिक

English Usage: The workman repaired the broken fence in no time.

Hindi Usage: श्रमिक ने जल्द ही टूटी हुई बाड़ को ठीक कर दिया।

a general term for any employed male, can be used loosely in different contexts.

कर्मचारी

English Usage: Every workman on the site followed the safety regulations.

Hindi Usage: साइट पर हर कर्मचारी ने सुरक्षा नियमों का पालन किया।