A Legal Technician practices law under a limited license. Legal Technicians are licensed to counsel and assist clients, short of representing them in court, in limited legal matters approved by the Washington Supreme Court.
In the most general sense this term denotes an agent or substitute, or one who is appointed and authorized to act in the place or stead of another. Black's Law Dictionary
In other words, an attorney may be authorized to act on behalf of another person.
A person learned in the law; as an attorney, counsel, or solicitor. Any person who, for fee or reward, prosecutes or defends causes in courts of record or other judicial tribunals of the United States, or of any of the states, or whose business it is to give legal advice in relation to any cause or matter whatever. Act of July 13, 1800. Black's Law Dictionary
In other words, a lawyer is any person whose business it is to give legal advice, or who, for compensation, prosecutes or defends causes in court. In Washington, a fully-licensed lawyer may act on your behalf ( see "What is an attorney?) and is not limited to practice in one area of the law.
No.
Generally speaking, a fully-licensed lawyer does not have limits on practice areas or tasks which they may perform. A lawyer may appear on a client’s behalf (as an attorney) and make legal arguments to the court.
A legal technician has a limited license to practice law within specific practice areas, and particular tasks within those areas.