Especially vs. Specially

What's difference between especially and specially ?

This is one of the the most frequently asked questions among the ESL learners which even sometimes get some natives confused .So,I decided to write the article to clarify the issue for readers.

Especially

1-Especially is used for emphasis ,meaning in particular and above all:

-She likes all of her pets ,especially the cats.
-He is very good at many sports,especially swimming and golf.
-Food was spoiled especially meat.

2-Especially comes in front of adjectives to mean in particular:

-He is especially adept at diving.
-I am especially concerned about your health.
-I'm feeling especially tired tonight because I had so much work to do.

3- Sometimes especially comes with if , when ,as or since ,the case is not usual with specially:

-I am going to work really hard on my project, especially since I failed my test last week.
-You should constantly drink water while hiking, especially when food is scarce.
-We should keep warm ,especially if we want to go on climbing in the cold weather.
-She wanted to go to the mountains ,especially as the weather was beginning to improve.

Specially

1- "Specially" is used in front of past participles to mean for a particular purpose:

-This kind of car is specially designed for the handicapped.
-These houses are specially built for the homeless.
-She has a chair that was specially made for her.

So,the uses such as specially selected,specially constructed,specially written,specially created,specially trained and etc. are commonly used.especially,whereas, is not common with this form of verb.

2- It's used to mean "specifically" or "uniquely" or "only;In this use, it's usually associated with "for":

-My father bought the bike specially for me.
-My mother baked the cake specially for me.
-They have to learn French specially for the job.

3- Specially is usually uncommon with in ,at,