used to refer to an additional person or thing of the same type as one already mentioned or known about; one more; a further

have another drink

I didn't say another word

170 miles done, only another 100 to go

used to refer to a different person or thing from one already mentioned or known about

come back another day

his wife left him for another man

an additional person or thing of the same type as one already mentioned or known about

the British poet Philip Larkin is another of his favourite writers

they have two sessions, one in the morning and another in the afternoon

a different person or thing from one already mentioned or known about

they kept moving from one place to another

he may be fit for one type of work but not another

it is one thing to formulate policies and quite another to implement them