The difference between a catalog and a database is , A library catalog allows you to search for items owned by a specific library including books,movies,and journals.
A library database allows you to efficiently search for published information such as magazines,journals,and newspapers.
When the vowel starts with a suffix you drop the final E.
ex.
•love + able = lovable
•change + ing = changing
Liquids have no shape and are very freely moving.