From the context of the sentence, the relationship of the words accurate and authentic is truthfulness and trustworthiness.
Step-by-step explanation:
To begin with what defines the word "accurate" is the truthfulness of the content which is usually seen in the content analysis. A record of words and text that carries the truth also known as accurate. Whereas, the word "authentic" is record of a record which carries a trustworthiness behind the text but very transparent.
The relationship between accurate and authentic is both truthfulness and trustworthiness. From the context of the sentence, the relationship of the words accurate and authentic is truthfulness and trustworthiness.
The have the same aspects and higher quality of trustworthiness between both the words. The reliability of the record completes the trustworthiness of the authentic.