ambergram???

[bertha]

Hello, im looking to find out what its called when you have one word written but when you turn it round or upside down it spells a completly diffrent word.
someone told me it was ambergram, but i don`t think thts right!
thanks for your help

[dr john]

Close but no coconut: it's ambigram:

http://en.wikipedia.org/wiki/Ambigram