Pedagogue
Part of speech: noun
Definition: A teacher or instructor of children; one whose occupation is to teach the young. A pedant; one who by teaching has become overly formal or pedantic in his or her ways; one who has the manner of a teacher. A slave who led the master's children to school, and had the charge of them generally.
Educator
Part of speech: noun
Definition: A person distinguished for his/her educational workA person who, or a thing which, educatesA teacherA person that accepts responsibility for the educating process and educates by supporting and assisting an educand.
Example sentence: To aid life, leaving it free, however, that is the basic task of the educator.