The one thing the two words have in common is their function; which is, they act as auxiliary verbs. Otherwise also known as helping verbs, auxiliary verbs add functionality to main verbs.

Has aprendido el pretérito perfecto. The first part of the perfect tense is the present tense of the verb haber, which is known as an auxiliary verb. An auxiliary verb, also called a helping verb ...

To form the perfect tense you need a subject, an auxiliary verb and a past participle. Perfect tense with 'être' in French The perfect tense is used to say what you did or have done in the past.