As nouns the difference between intimacy and tenderness

is that intimacy is feeling or atmosphere of closeness and openness towards someone else, not necessarily involving sexuality while tenderness is a tendency to express warm, compassionate feelings.

As nouns the difference between intimacy and tender

is that intimacy is feeling or atmosphere of closeness and openness towards someone else, not necessarily involving sexuality while tender is (label) (l) (fuel-carrying railroad car).

As nouns the difference between infiltration and groundwater

is that infiltration is the act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body while groundwater is water that exists beneath the earth's surface in underground streams and aquifers.

As nouns the difference between runoff and accumulation

is that runoff is that portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area while accumulation is the act of amassing or gathering, as into a pile.

As nouns the difference between curiosity and snoopiness

is that curiosity is (obsolete) careful, delicate construction; fine workmanship, delicacy of building while snoopiness is the characteristic of being snoopy.

As nouns the difference between interplay and interference

is that interplay is interaction while interference is interference (all senses).

As a verb interplay

is to interact.

In obsolete|lang=en terms the difference between attempt and participate

is that attempt is (obsolete) to try to move, by entreaty, by afflictions, or by temptations; to tempt while participate is (obsolete) acting in common; participating.

As verbs the difference between attempt and participate

is that attempt is to try while participate is to join in, to take part, to involve oneself ((in) something).

As a noun attempt

is the action of trying at something.

As an adjective participate is

(obsolete) acting in common; participating.

As verbs the difference between advocate and proclaim

is that advocate is (label) to plead in favour of; to defend by argument, before a tribunal or the public; to support, vindicate, or recommend publicly while proclaim is to excitedly, verbosely and candidly describe.

As a noun advocate

is someone whose job is to speak for someone's case in a court of law; a counsel.

In archaic|lang=en terms the difference between device and mechanic

is that device is (archaic) power of devising; invention; contrivance while mechanic is (archaic) mechanical; relating to the laws of motion in the art of constructing things.

In obsolete|lang=en terms the difference between device and mechanic

is that device is (obsolete) opinion; decision while mechanic is (obsolete) base.

As nouns the difference between device and mechanic

is that device is any piece of equipment made for a particular purpose, especially a mechanical or electrical one while mechanic is a skilled worker capable of building or repairing machinery a mechanic can be compared to a technician, the distinction being that the technician is stronger in theory, the mechanic stronger in hands-on experience.

As an adjective mechanic is

(archaic) mechanical; relating to the laws of motion in the art of constructing things.

As an adjective certain

is sure, positive, not doubting.

As a determiner certain

is having been determined but unspecified. The quality of some particular subject or object which is known by the speaker to have been specifically singled out among similar entities of its class.

As a noun confidence is

passive self-assurance.