Below are two separate puzzles, but you will need to solve both to find the one-word answer.
Good luck!
I think the answer is
Nationalism
Completed crossword
Completed wordsearch
Finally
Reading the unused letters in the wordsearch backwards gives TRANSPARENT which clues overlaying the wordsearch locators on the crossword (the wordsearch is a transparent overlay). This gives the following result
Now rearranging the uncrossed letters give NATIONALISM
Thanks to Mathgeek for suggesting overlaying the images in the comments.
2 down in the crossword
This is about the alphabetical neighbours and not the physical ones.
For the right-hand part:
Arno
Maps
Estate
Congo
Not sure about this one / Edit : it is wrong, hexomino has the right answer.
Crags ?
Area
Land
Won