What is the rule for words ending in ence or ence?

The rule for words ending in "-ence" or "-ance" is based on the root word:

-ence: This ending usually follows words with -ent as the root.

* Examples:

* Independent (adjective) --> Independence (noun)

* Different (adjective) --> Difference (noun)

* Eloquent (adjective) --> Eloquence (noun)

-ance: This ending usually follows words with -ant as the root.

* Examples:

* Important (adjective) --> Importance (noun)

* Ignorant (adjective) --> Ignorance (noun)

* Abundant (adjective) --> Abundance (noun)

Exceptions:

There are some exceptions to this rule, such as:

* -ance after -ing : Guidance, Insurance

* -ence after -ing: Convenience

In general, if you're unsure, the best way to determine the correct ending is to look it up in a dictionary.