Yes. The Hebrew word for "angel" is "malach." The word "malach" is related to the word "melacha," which means "task." Hence, a malach is an agent or vehicle which accomplishes a task. The English word "angel" comes from the Greek word "angelos" meaning "messenger" or "agent."
Therefore, a "malach" can be a wind, a person, or a purely spiritual force. The angels such as those who spoke to Abraham and Jacob were purely spiritual forces which appeared in human form.
