Vocations almost always carry the connotation of some kind of manual labor (plumber, carpenter, electrician, mechanic, etc). By contrast, "profession" implies some kind of white collar job (historically the contrast was much stronger, but today any kind of "knowledge worker", including being a clerk, is considered a "professional").
It would be understood, and sounds natural, but the -al is not necessary; "vacation" is a perfectly good adjective. And, ate to brake this too you, but even people running shools sometime make usage airs. By the way, I believe your example about the "vacational college" was a typo or brainfart for "vocational". As for your example in comment above, I certainly wouldn't follow the usage example ...
It refers to a person who is unemployed, not receiving an education or in vocational training. I'm not sure if the acronym is commonly-used in your country, but if it is, then do you use it to describe someone who are in their late 30s, 40s and 50s also?
I know that include is a verb while including is a preposition but they made me confuse when it comes to their usage. I usually confuse when to use include with including. Most Thais like sp...
differences - When to use "include" and "including"? - English Language ...
The present participle phrase ("including improved cardiovascular health") modifies a phrase ("the benefits of exercise") from which it is separated by an entire predicate ("are vast"). People use terms such as "misplaced modifier" and "extraposition" for this issue. We can take care of it quite simply: The benefits of exercise, including improved cardiovascular health, are vast . . . However ...