X-rated materials are defined as content that is sexually explicit or obscene in nature. There are various synonyms for the term 'X-rated materials' that are often used interchangeably. Some common synonyms include Adult content, Explicit content, Pornography, Sexual content, Obscene material, Erotica, and Adult-only material. Some may also refer to such materials as NSFW (Not Safe For Work), which is a widely recognized internet acronym to indicate that the content is unsuitable for viewing in a professional setting. While various synonyms may be used to describe X-rated materials, it's essential to recognize that the term is often associated with content that is not suitable for minors and may cause offense to some individuals.