What is the difference between glossolalia and xenoglossy in Pentecostal worship?

In the context of Pentecostalism, both glossolalia and xenoglossy are considered manifestations of the "baptism with the Holy Spirit," though they differ in their linguistic nature:

• Glossolalia: This is defined as speech in an unknown language. It consists of utterances that approximate words and speech, often produced without the speaker's conscious control during intense religious experiences. It is frequently experienced as a personal prayer language.12
• Xenoglossy: This refers to speech in a language that is known to others but is not known to the speaker.2

While both are viewed as supernatural gifts of the Spirit, glossolalia is characterized by its unintelligible nature to human listeners, whereas xenoglossy involves the articulation of a recognizable, existing human language that the speaker has not learned.12