from collections import OrderedDict

>>> d1 = {'properties': OrderedDict([('KAEK', 'str:12'),
...               ('PROP_TYPE', 'str:4'),
...               ('ORI_TYPE', 'int:1'),
...               ('ORI_CODE', 'str:100'),
...               ('DEC_ID', 'str:254'),
...               ('ADDRESS', 'str:254'),
...               ('NUM', 'str:9'),
...               ('LEN', 'float:19.11'),
...               ('AREA', 'float:19.11')]),
...  'geometry': 'Polygon'}

>>> d1 = d1['properties']

>>> d2 = {'properties': OrderedDict([('OBJECTID_1', 'int:9'),
...               ('OBJECTID', 'int:9'),
...               ('FID_PERIVL', 'int:9'),
...               ('DESC_', 'str:254'),
...               ('PROP_TYPE', 'str:4'),
...               ('Shape_Leng', 'float:19.11'),
...               ('Shape_Le_1', 'float:19.11'),
...               ('Shape_Area', 'float:19.11'),
...               ('PARCEL_COD', 'str:254'),
...               ('KAEK', 'str:50'),
...               ('NUM', 'int:4'),
...               ('DEC_ID', 'int:4'),
...               ('ADDRESS', 'int:4'),
...               ('ORI_CODE', 'int:4'),
...               ('ORI_TYPE', 'int:4')]),
...  'geometry': 'Polygon'}

>>> d2 = d2['properties']

>>> from pprint import pprint
>>> pprint(d1)
OrderedDict([('KAEK', 'str:12'),
             ('PROP_TYPE', 'str:4'),
             ('ORI_TYPE', 'int:1'),
             ('ORI_CODE', 'str:100'),
             ('DEC_ID', 'str:254'),
             ('ADDRESS', 'str:254'),
             ('NUM', 'str:9'),
             ('LEN', 'float:19.11'),
             ('AREA', 'float:19.11')])
>>> pprint(d2)
OrderedDict([('OBJECTID_1', 'int:9'),
             ('OBJECTID', 'int:9'),
             ('FID_PERIVL', 'int:9'),
             ('DESC_', 'str:254'),
             ('PROP_TYPE', 'str:4'),
             ('Shape_Leng', 'float:19.11'),
             ('Shape_Le_1', 'float:19.11'),
             ('Shape_Area', 'float:19.11'),
             ('PARCEL_COD', 'str:254'),
             ('KAEK', 'str:50'),
             ('NUM', 'int:4'),
             ('DEC_ID', 'int:4'),
             ('ADDRESS', 'int:4'),
             ('ORI_CODE', 'int:4'),
             ('ORI_TYPE', 'int:4')])

pprint(set.symmetric_difference(set(d1.items()), set(d2.items())))
{('ADDRESS', 'int:4'),#somehow inform that this belongs to d2 and so on...
 ('ADDRESS', 'str:254'),#d1
 ('AREA', 'float:19.11'),#d1
 ('DEC_ID', 'int:4'),#d2
 ('DEC_ID', 'str:254'),
 ('DESC_', 'str:254'),
 ('FID_PERIVL', 'int:9'),
 ('KAEK', 'str:12'),
 ('KAEK', 'str:50'),
 ('LEN', 'float:19.11'),
 ('NUM', 'int:4'),
 ('NUM', 'str:9'),
 ('OBJECTID', 'int:9'),
 ('OBJECTID_1', 'int:9'),
 ('ORI_CODE', 'int:4'),
 ('ORI_CODE', 'str:100'),
 ('ORI_TYPE', 'int:1'),
 ('ORI_TYPE', 'int:4'),
 ('PARCEL_COD', 'str:254'),
 ('Shape_Area', 'float:19.11'),
 ('Shape_Le_1', 'float:19.11'),
 ('Shape_Leng', 'float:19.11')}