they were intended as a sort of note a person would write to him or herself as a reminder.
because our languages share some common origins...
how are the origins of rock salt and some limestone similar
They are related to subduction because they were formed in similar ways
Well, a piccolo is similar to the flute because is the same but piccolo is a bit smaller and also recorder and all the other woodwind (and metal wind) instruments are related to the flute because it is in the same family!
Because they are evolutionarily related - they both had a common ancestor. They have similar body shapes and similar social behaviours.
The structure of a memoir is similar to the structure of a narrative.
No they are not related. They have similar features but are not related.
In fact the organisms are closely related because the DNA sequences are more similar. DNA sequences are more different as the organism differs.
I think they are similar because a triangle can fit into a circle and vise versa.
ancestor
Hydrogen and oxygen are similar because we both need them to survive hehehe
There are Hindu gods and demons in Buddhist art because both the philosophy and the religion have very similar origins.