Breakdown of بعضی از این نمونهها کاربرد یکسان دارند و بعضی دیگر کاملاً متفاوت هستند.
و
and
این
this
بودنbudan
to be
ازaz
from
Questions & Answers about بعضی از این نمونهها کاربرد یکسان دارند و بعضی دیگر کاملاً متفاوت هستند.
How do we form the "some ... others" contrast in this sentence?
The contrast is built using بعضی (some) in the first clause and بعضی دیگر (others / some others) in the second. You can use this structure to compare any two plural groups, and it allows you to drop the noun in the second half so you don't sound repetitive.
Could we use یکی ... دیگری (one ... the other) in this sentence instead?
No, because یکی ... دیگری is used strictly for singular nouns. Since we are talking about multiple samples (نمونهها), we have to use the plural contrasting pair بعضی ... بعضی دیگر (some ... others).
Why is از (from/of) used after the first بعضی but not the second?
In the first half, we are specifying the group being talked about: بعضی از این نمونهها means "some of these samples". In the second half, بعضی دیگر acts as a standalone pronoun meaning "others", so we don't need از because we aren't naming the group again.
Is there an unseen ezafe connecting the words in کاربرد یکسان?
Yes! You need to pronounce it کاربردِ یکسان (karbord-e yeksan). The ezafe vowel is required here to connect the noun کاربرد (use or application) to its adjective یکسان (identical or the same).