Mispronouncing a word due to nervousness is an example of linguistic performance because it reflects an actual use of language that can be affected by external factors such as stress, fatigue, or distraction.
Linguistic competence (a concept introduced by Noam Chomsky) refers to a speaker's internal knowledge of a language, including grammar, vocabulary, and phonological rules.
Linguistic performance refers to the actual production and comprehension of language in real-life situations, which can be influenced by psychological and social factors.
