superstructures is a form of:

Superstructure



1.
ផ្នែកខាងលើនៃសំណង
noun
1.
(បច្ចេកទេស) ឧបរចនាសម្ព័ន្ធ, រចនាសម្ព័ន្ធថ្នាក់លើ
ENGLISH MEANING
noun
1.
Any material structure or edifice built on something else; that which is raised on a foundation or basis
2.
All that part of a building above the basement. Also used figuratively.
3.
The sleepers, and fastenings, in distinction from the roadbed.