A context api is a react method that help to send transfer unique data by props drilling all over the applications.This is a way to sent data in any components. By context api we can send data like props grand to chiel or sibling components.
Semantic Tag are Html tag.Its help us and page how page look likes in web browsers. Semantic teg are Clearly defines its content.Here are some example about semantic tag header, nav, aside, footer.
Inline and blick elements are mostly same but differnt in futures. In Inline cant add multiple div . Width hight are fixed cant edit.Its will take how much space its need above the text. But in line block we can use any thing freely.we can add multiple div or any tag inside it .We can add Width Height customize any thing.Its start with new line and will take full width