4th Declension Nouns - Endings

Below are the endings charts for 4th declension nouns. Take time to notice a few things while learning these new endings:

What features from earlier declensions still appear for 4th declension?
Are there any similarities between 3rd and 4th declension endings? Between 2nd declension and 4th declension?
What letter is most commonly used in the inflections for the 4th declension?

Nota Bene

Note the following features which 4th declension nouns share with other declensions:
- Masculine and Feminine accusative singular ends in -m
- Ablative singular is a single vowel: -u
- Dative and Ablative plural are the same: -ibus
- Neuter Nominative and Accusative (both singular and plural) are identical
- Neuter Nominative and Accusative plural both end in -a
Note the following unique features for 4th declension:
- Neuter singular - every ending is -u, except for genitive singular which is -us. This is more like an English noun, which does not change form, except for the possessive (for example: in English, the noun dog is used as both the subject and object form, only changing in form when being used as the possessive: dog's)
- Because of the repeated use of -u, 4th declension neuter does not follow neuter rule 3: genitive, dative and ablative forms are the same for neuter nouns as their non-neuter counterpart.