To answer your question.......no, there is no difference in how we express possession between the two. The following would be correct:
1(a) - Table's leg (somewhat correct, personifies the table, not common use/ see explanation below*)
1(b) - Table leg (correct, common use)
2(a) Mary's book (correct)
2(b) Mary book (not correct)
3(a) applications' interfaces (correct, when plural the apostrophe follows the "s")
3(b) applications interfaces (not correct)
*In English, it does sound strange (although not grammatically incorrect) to express possession with inanimate objects. If you were to say "the computer's screen", it somewhat personifies the computer. A person can own (possess something), but, technically an inanimate thing cannot. The computer does not own the screen. :)
Therefore, it is usually better to use the term as an descriptive adjective instead. Sometimes we can do this in English.
1. the computer screen
2. the table top
3. the television remote
"Computer, table," and "television" are all used like descriptive adjectives. This is correct to do and much more common.
I hope this helps!