Searching PubMed
The main PubMed search bar will search for your term anywhere in a PubMed record about an article - the title, author, keywords, etc. You can search for your term in specific fields using the Advanced searching form, which should look similar to the Web of Science search form.
Once you perform your search and have a list of results, if you wish to narrow your results to specific article types, you can do this from the menu on the left (just like in Web of Science), under Article types. To display more types, click more... and choose which types you want visible in the menu. Then, click on the type in the menu to view just those types. To view the PubMed record for an article, which includes the abstract and full-text access links, click on the title of the article.
PubMed classifies Original Research Articles under the heading Journal Article. When viewing the PubMed record for these types of articles, they will clearly have the major components outlined in the abstract:
Most Review articles will be marked as such, but not all. It is a good idea to read the full text of the article and compare the sections to those expected in an experimental research article to determine the type of article.
