Here are common form elements and their usage examples in HTML:

1. Text Input Field

<input type="text" name="username" placeholder="Enter your name">
text_input

2. Checkbox

<input type="checkbox" name="subscribe" value="yes"> Subscribe to newsletter
checkbox

3. Radio Button

<input type="radio" name="gender" value="male"> Male
<input type="radio" name="gender" value="female"> Female
radio_button

4. Dropdown Menu

<select name="country">
  <option value="usa">USA</option>
  <option value="canada">Canada</option>
</select>
dropdown

5. File Upload

<input type="file" name="attachment">
file_upload

6. Submit Button

<input type="submit" value="Register">
submit_button

For more details about HTML forms, check our HTML Form Tutorial. Want to learn about form styling? Visit CSS Form Styling Guide.