About 34,346 are peer-reviewed journals in the top-level topic domains of biological sciences, social sciences, physical sciences, and health, while Scopus includes almost 36,377 titles (22,794 active titles and 13,583 inactive titles) from approximately 11,678 publishers. Scopus is user-friendly enough for first-time users and comprehensive enough to rival the Web of Science (WOS), according to a 2006 study. The researcher would benefit greatly from being able to search both before and after a given reference. "One advantage of WOS over Scopus is the depth of coverage," with the whole WOS database reaching back to 1945 and Scopus going back to 1966. Scopus and WOS are mutually supportive since none is comprehensive.[4] For the time span between 1990 and 2020, a subset of studies revealed that WoS and Scopus shared coverage of around 80-90%.<refs>
 

Scopus entries for the same article typically have three to five times as many keywords as their Web of Science (WoS) counterparts, with the Scopus keywords being more narrowly focused on the article's specific content as opposed to WoS's focus on the broad category in which the article falls. Scopus users may identify more relevant papers by using a higher number of narrowly focused keywords, while simultaneously filtering out false positives. Scopus exports citation titles, whereas WoS exports the doi numbers of cited publications (for example, in the ris format). Scopus also lets you to export 20,000 references at once (as a ris file, for example), whereas WoS only allows you to export 5,000. The difference between WoS and Scopus is that the former exports the doi's of cited references while the latter exports the titles.Scopus allows you to search for chemicals using either their CAS number or their name, but WoS does not. However, although WoS does provide chemical structure search, very few articles are indexed for such queries at now. If you need to look up a chemical, SciFinder is your best bet.
 

Author profiles in Scopus provide information on the author's affiliations, number of publications, bibliographic data, references, and citations per document. In addition to calculating authors' h-indexes, it notifies registered users of profile updates. Scopus CiteScore[6], a free website created in 2016, is one example. It offers an alternative to the impact factor, a journal-level statistic that may correlate adversely with dependability, by providing citation data for all 25,000+ current titles in Scopus, including journals, conference proceedings, and books.[7]
The open source digital identification ORCID may be linked to authors' Scopus IDs.[8]
Scopus began including some data from Unpaywall regarding the open access status of works in 2018.[9] Scopus does not include Open Access data in its ris export files.
 

Scopus's owner, Elsevier, is also a major international publisher of scholarly journals; therefore, in 2009, an independent and international Scopus Content Selection and advisory board (CSAB) was established to ensure that Elsevier's financial interests did not influence the selection of journals for inclusion in Scopus and to ensure that the database's content coverage policy was always clear and objective. 
Scientists and specialists in several library fields make up the board. Nonetheless, complaints of a conflict of interest have persisted.The CSAB group decides which journals and books to include or exclude from Scopus. The reevaluation approach is said to be based on four criteria: Publication Concern, Under Performance, Outlier Performance, and Continuous curation. Since 2004, they have added 41,525 titles while removing 688. Since 2016, the CSAB has reevaluated 990 titles from 539 publishers, ultimately resulting in the discontinuation of indexing for 536 titles.
Despite this, studies repeatedly reveal that predatory journals are included in the research.