"Capital" is primarily a noun, but it is also used as a so-called "substantive adjective", as in "capital punishment."
In a title, you generally do not capitalize the word "for" unless it is the first word or part of a proper noun.
Capitalize the word architect only when it is part of a title.Example:Senior Architect, Joe Smith
No, you do not have to capitalize the word "female" unless it is at the beginning of a sentence or part of a title.
Capitalize the word academy only when it is part of a title.Example:Norton Space and Aeronautics AcademyAcademy of the ArtsAcademy Awards
Yes, you should capitalize the word "scurvy" if it is the first word in a sentence or if it is part of a proper noun or title.
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
No, the word lunch is not capitalized in a sentence. You would only capitalize it if it was part of a title (e.g. it was a word in a book title).
You capitalize the word 'union' when it is at the start of a sentence or part of a title/name (Eg: Singapore Teachers' Union).
You only capitalize it if it is part of a proper noun. The FBI is the Federal Bureau of Investigation.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word diplomacy is a noun.