semantics refers to the correct interpretation of the meaning of a word or sentence. To use a word semantically is to use it in a way that is properly aligned with the meaning of the word. When we misuse a word we are not using it semantically.
Examples of semantic elements: <form>, <table>...
Infographic is a form of image which was created from a tools like canva.com and piktochart tools with relevant contents and links it can be saved by either JPG format or PDF format..
Pinging submission sites are useful for indexing your sites in google page very fast. There are so many pinging submission sites which is used for crawl and indexing websites.
Wordpress is a free publishing software and content management system (CMS). The software which opens a wide array of plugins which is very useful for creating an awesome websites. And Wordpress is a SEO friendly software.