contain means ingredient
a seed contains nutrients a spore dosen't.
Obviously you're supposed to put contains when "something contains something else" such as "That jar contains food." then contain in a present tense sentence like "Can you contain your dog, please?"
8thManage PM is one good project management information system, it contains all the functions above.
records, a record contains fields, and a field is made up of characters
The Salmon Fish That Contains More Vitamin D
Do All Healthy Intestines Contain Bacteria
Why Some Omega-3 Products Contain Vitamin E
Risks of Using Styrofoam Containers