An infinite or unending period of time.

अनंत काल

English Usage: Their love seemed to last forevermore.

Hindi Usage: उनका प्यार हमेशा के लिए लग रहा था।

For all future time; for always.

हमेशा

English Usage: She vowed to love him forevermore.

Hindi Usage: उसने उसका हमेशा प्यार करने की कसम खाई।