In the sentence, "The tree fell down." there is one noun: tree
The word 'the' is an article designating a specific tree.
The word 'fell' is the verb.
The word 'down' is an adverb modifying the verb 'fell'.
He fell off the ladder and broke his arm.We will fell this tree.
The nouns are tree, field and barn. There are no pronouns.
To fell a tree = transitive I fell = intransitive
Felt is a word. It is a noun and also the past tense of feel.
Some concrete (physical) nouns that begin with A:aardvarkairairplanealealligatoraltaraluminumambassadoramethystangelantanteaterappleapricotaquariumarborarmarmadillosartichokeartistash (tree)asphaltastronautattendantatticauntauthoraviatoraxeaxleProper concrete nouns:Abraham LincolnAlabamaAntarcticaAstrodome
An example is to fell a tree, meaning to chop it down.
gravity
You would use "fall" because "to fall" is the infinitive and you use the uninflected version. "Fell" is the past tense of "fall," but you are not using past tense here. "Fell" can also be a transitive verb meaning to cause (something else) to fall. If you chop down a tree, you fell the tree, but the tree falls.
He saw that an apple fell from a tree and wondered why it fell down and why it didn't just stay in the air floating. [ It fell down because of the gravitational pull pulling it back towards the ground ] .
The nouns in the sentence are bird, branch tree, song.
Help her up then identify the issue
An example is to fell a tree, meaning to chop it down.
tell someone so they cam move it
The nouns are:birdbranchtree
gravity
She was skiing and went down the slope and fell and hit a tree.
Juniper