NLP analyzes text written in natural language, e.g. news, letters, contracts, social media posts, and so on. It can extract named entities (see NERNER is a subfield of NLP. It deals with extracted named entities, which are categorized objects in natural language, like... ), sentiment, roles, relationships, themes, and more from raw unstructured text. OCRWe speak about this a lot here. OCR is a technology used to interpret the pixels in an image as... is required before it can be applied to scanned images.