How to pass data from one component to another component

If you are passing data from parent component to your child component you should use @input In your case you want to pass data from one component to another which are in the same level. i would suggest you to go for shared service. Look at this  https://stackoverflow.com/questions/47376442/angular-4-how-to-pass-api-data-from-one-component-into-another-component/47385677#47385677