English Grammar and Writing : English language courses, English Grammar Online
These words refer to something different, remaining, or additional. They are placed before the noun. Another is used with singular nouns, other with singular or plural.
Plural: There are other jobs you could try.
Singular: Where's the other packet of cereals?
Singular: Have another cup of tea.
Other is an adjective meaning 'different'.
Another expresses quantity, something extra or additional.
Have the other cup of tea, not this cup.
Have another cup of tea, not just the one cup.