When several communities grow to the extent that they form a single unit it is often referred to as a conurbation.
When two tornadoes merge, it is just called merging; there is no special term.
If two tornadoes come together they merge into one tornado.
octave
Merge
Yes, the process is called binding process. The process occurs when two separate souls gets very close together with a lot of energy. After a certain time the souls with begin to merge, it takes about one year for two souls to completely merge. The result is a super powerful soul with characteristics of both souls.
the cells help repair them and then those cells merge into one and cause the broken joints to merge
When two rivers meet it is called confluence. It applies to place where two or more bodies of water merge. There are 10 major confluence around the world.
A contraction allows writers to merge two verbs together, or a pronoun and verb:isn'thasn'thaven'tcan'tcouldn'twouldn'tI'llI'veyou'llyou'veshe'llthey'veetc.
fusion
It means to merge or meld two or more things together into one thing.
grouping
Incomplete dominance