Technical term to describe/differentiate the structure of an instance by the number of samples per instance ('tuple' vs 'time series')
We have a Dataset
 Dataset has Instances
Instances can be a Vector Or a Sequence.

If it is a vector, It has Features
Examples - Image, Tabular data
If it is a Sequence, It has Time-steps**
Each Time-step can have Features i.e. Uni/Multi-Variate
Examples - Video, Audio, Time-series data

**When we use text-data as a sequence, we call the words as &quot;Tokens&quot;