I didn't realise you would be copying it down as you said the word was
in A3 and you wanted the return value to be in A5 (only room for one
more word). Normally you would arrange the words in one column (A) and
put the formula in another column (B), so that you could then copy
down as many as you wish. Change the formula to this:
=IF(A3="","",VLOOKUP(A3,M$1:N$5,2,0))
so now when you copy it down you will always be looking at the same
table (rather than M2:N6, M3:N7 etc as it was before. If you have more
than 5 reference words, so that the table occupies say M1:N35, then
change the formula to:
=IF(A3="","",VLOOKUP(A3,M$1:N$35,2,0))
then copy down.
Hope this helps.
Pete