Oh this is a tough one. 10% complete?
join
joint
clamp
crimp
screw
rivet
set
fuse
weld
solder
wedge
rabbet
mortise
miter
jam
dovetail
graft
link
union
marriage
connect
conjunction
conjugation
attach
annex
symphysis [anatomy]
anastomosis
confluence [flow]
juncture [time]
communicate [voices]
concatenate
meeting [
reunion
assemblage
coition [sex]
copulation
sex
love-making
joining
pivot [axis]
hinge
articulation
seam
gusset
suture
stitch
miter
mortise
close
tight
fasten
secure
coherence
combine
unite
conjoin
associate [near]
together [numerically]
bind
clinch
twist
tie
pinion
string
strap
sew
knit
lace
tat
stitch
tack
button
buckle
lash
truss
braid [interwoven]
splice
tether
moor
harness
chain
lock
hitch
latch
leash
yoke
fetter
belay
brace
hook
grapple [struggle]
couple
bridge [gap]
span
clasp
entwine
interlink
interlace
intertwine
interweave
entangle
twine round
belay
cohere
incorporate
tight
firm
fast
close
tight
taut
taught
secure
set
inseparable
indissoluble
intimate