how to select element by name in selenium code example

Example 1: difference between find element and find elements

Differences between findElement and findElementS method?
    --> findElement():
     
      -It does returns SINGLE web element.
      - Return type: WebElement
      - If it cannot find a web element, it throw - NoSuchElementException
          
   
   --> findElements():
      - Returns a List of WebElements
      - Return type: List<WebElement>
      - If it cannot find a web element, - It will not throw any exception.
      - It will simply return EMPTY LIST.

Example 2: selenium ways of finding

elementcss= driver.findElement(By.cssSelector('div.nav-search-input'))