Basic or Basis

Basic talks about something that is essential or simple.
Basis talks about something that is the starting point or most important part of something.

  • I have a basic understanding of English tenses.
    (simple understanding)
  • Reading, writing and spelling are the basic communication skills needed for life.
    (reading, writing and spelling are essential skills)
  • This information formed the basis of their opinion.
    (important part to create their opinion)
  • They’ve been working on the basis that they wouldn’t need more money.
    (from the start they believed they wouldn’t need more money)