denotes a quantity equal to 3

तीन

English Usage: There are three apples on the table.

Hindi Usage: टेबल पर तीन सेब हैं।

multiplied by a specific number (as in 'threefold' meaning three times)

तीगुना

English Usage: The company's profits increased threefold this year.

Hindi Usage: इस वर्ष कंपनी का मुनाफा तीन गुना बढ़ गया।