interlocking vs interlinking

interlocking is a noun but interlinking is not a noun.

Word	Noun	Adjective	Verb	Adverb
interlocking	Yes	Yes	No	No
interlinking	No	Yes	No	No

As adjectives, interlocking and interlinking are synonyms defined as:

interlocking and interlinking: linked or locked closely together as by dovetailing

Other synonyms of interlocking include interlacing, interwoven.

interlocking (noun)	interlinking (noun)
the act of interlocking or meshing
contact by fitting together

interlocking (adjective)	interlinking (adjective)
linked or locked closely together as by dovetailing	linked or locked closely together as by dovetailing