is there some difference between "an official" and "an officer"

Question

if I use the word "official" as a noun, then does it have some difference with the word "officer" ??

Sample sentence:

There are three major officers, head official, deputy official and other officer along with the people.

Answer 1

A. An officer:

1. a person who is in a position of authority in the armed forces: army / air- force / naval officers
   
2. a person who is in a position of authority in the government or a large organization
   
3. (used as a form of address) = POLICE-OFFICER
   
4. a title for a police officer
   _{Oxford Learner's Dictionary}

B. An official:

1. Noun (often in compounds) a person who is in a position of authority in a large organization. For example, My father has been an economic official in Vina-milk company in Vietnam.
   
2. Adjective. Connected with a work of some person who has a position of authority. For example, as a financial manager my father has official responsibility to monitor all financial activities and movements of the money in his company.

Answer 2

An officer is a person who works in any of the disciplined forces or government.

An official is a high ranking officer who, by virtue of formal rank, is allowed to speak on behalf of the organization.