A run on sentence. It also creates "an incomplete thought" because the writer gets tangled up in numerous related thoughts that do not convey one complete thought.
Example:
When working but it wasn't at my regular job it was at a part-time job I only work there on Saturdays but not this last Saturday because my best friend in the whole world worked that day because I went to a conference that night.
The above is both a run on and incomplete sentence. It lacks a subject and verb, the two items that almost all sentences need. The person got so caught up in (too many) details, the sentence never finishes, "When working, (what happened...). For example: When working the Saturday before last, I slipped, fell, and broke my arm. I fell at my part-time job, not at my regular job. (The rest about the best friend isn't needed because it has nothing to do with the main thought.)
An organ is defined as several types of tissue working together.
The apostrophe is the punctuation mark used to denote contractions, where one or more letters are omitted from several original words.
There are several possibilities. Context and punctuation would help!
You forgot a comma.
A group of several ships traveling together is called a convoy.
several pulleys working together is known as a pulley system.
A plan that that provides defined benefits. Supplemental Social Security offers several retirement plan for family and individuals.
Well, for starters, it lacks proper punctuation and there are several misspelled words.
Orchestra.
The alphabet Aa to Zz, numbers 0 to 9, and several punctuation marks and symbols, can be typed as characters into a computer as data.
Yes, an organ is several tissues working together.
No, "several" is not an adjective. It is a determiner that is used to indicate an imprecise number or amount.