possessing or involving detailed knowledge or study of restricted topic. person who concentrates primarily on particular subject or activity.

appearing or occurring at intervals.

engaging in speech. action of talking. To say things or ideas to someone with words.

used for emphasis with following adjective functioning as adverb. thing that is unspecified or unknown.

Concerning one particular thing or kind of thing. medicine or remedy effective in treating particular disease.

particulars of place. To write the place someone lives on a letter.

Involving money. organization's finances.

each of parts into which something is or may be divided. Parts divided from the other parts of some things. divide something into separate parts or sections.

reason why something is done etc.. have as intention or objective.

person skilled in planning action or policy.

Nearly the same; alike. person or thing similar to another.

under normal conditions.

sum paid into bank. Amounts of money that is put into a bank account. To place or put something down in a certain place.

Powerful, positive excitement and interest.

give intellectual, moral, and social instruction to someone.