The document lists several potential research topics related to Wordnet including information retrieval, document similarity identification, autonomous text summarization, question answering systems, cross-word puzzle generation, structure and category detection, language pedagogy, text classification, search engine interfaces, text inference, word sense disambiguation, artificial intelligence, web interfaces, machine translation, sentiment analysis, and natural language processing. Recent research concepts highlighted include extraction, hyperlink identification, question answering systems, and text classification. The top 5 research areas provided are artificial intelligence, web interfaces over networks, machine level language and translation, sentiment analysis, and natural language processing.