Without a piece of thought about language form, we could not learn any language. Let us think what language form is.
Different languages have different ways to name objects of thought. We can say a dog in English. In German, ein Hund, in French, un chien, in Greek, σκυλος, and in Russian, собака.
All these words have different forms, but they refer to or indicate the same object that we name a dog in English.
We may use word forms in more than one sense. In the picture above, we can see Jemma’s dog. We would not have Buddie for a hot dog (!)
A cat in English can be eine Katze in German, or un chat in French, γάτα or γάτος in Greek, or кот in Russian.
A chat can be a conversation, in English. A gat can be a channel or passage. Kot can be a Yeniseian language.
Language forms happen to differ. Language forms also happen to be very similar. We always need to know the language and the context, to see what the language form denotes: a picture of a cat is not a cat.
Language form is always a word form. In language psychology, we have “body language” for a figure of speech. There is no language without syntax. Our bodies could not work for syntax (!)
We can use virtual words, to work on language form. Invented or virtual words have word shapes, but they have no meaning. They can help exercise syntax. Children invent words spontaneously, to practice language.
Try the virtual words and color code.